Metal detecting advice

Denarius

Full Member
May 18, 2012
122
30
Primary Interest:
All Treasure Hunting
As a newbie I've been collecting advice from a lot of threads over the last while trying to learn about metal detecting. I've been cutting and pasting and saving them on my computer. I'm going to post them here if that's cool. If anyone wants to add more please feel free. They are not well organized though.
 

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Jackalope

Full Member
Jun 27, 2009
243
167
Oahu, HI
Detector(s) used
White's, Garrett, Minelab
Primary Interest:
Metal Detecting
Interestingly, if all those posts above were cleaned up and assembled into booklet format - it would provide as much knowledge as most of the "detecting" books and videos out there, if not more. Someone could make a small fortune. That is, the in-the-weeds know-how on how to take advantage of hunting conditions on the beach is valuable, people pay for that information - and do. But why? This site is a library of information - and no library card is required. The info here is far wider and deeper on a range of detecting subject, and is free - what more could you ask for?
 

ARC

Gold Member
Aug 19, 2014
37,157
130,947
Tarpon Springs
Detector(s) used
JW 8X-ML X2-VP 585
Primary Interest:
All Treasure Hunting
So...
What you are basically saying is... you are paying attention :)
 

Geochem

Sr. Member
Dec 11, 2016
274
189
Primary Interest:
Metal Detecting
If I had to choose only one "line" to hunt on my area beaches it would be what I call, "the bunker line". Now this is one my area beaches and beaches like them, but this line has been very consistent and productive for me. Basically this line is that stretch of sand where items are dragged back from the wet sand areas and also pushed into from the first wave-break trough. In other words, it is that "first steep edge" or first drop off between the wet sand and the first trough. A lot of items get forced into this bunker line from both directions. I see a lot of guys hunting the top of this bunker at low tide as they are walking the waterline but I never see any of them hunting the water side or inside slope of this bunker. However, this inside slope is where I find a large number of my quality finds. The dynamics of the beach make this a top spot to hunt because this is where the force of both the returning water and the incoming water meet. As a result, this entire bunker line just becomes a collection area for items that are being moved and pushed around by both these forces.

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Metal detecting for coins and jewelry on America's fresh- and saltwater- beaches, has never been more popular or profitable. Folks have been going to the beach, and losing their belongings in the sand and surf, since the beginning of time.

Today's metal detector manufacturers offer units specifically engineered for the surf and sand treasure hunter, and there's no shortage of beach equipment or accessories to choose from when you decide to dive in! Lets start by looking at the machines we use to find treasure on America's beaches.

Very Low Frequency and Pulse Induction metal detectors.

The first thing to determine is what type of water, or beach you will be hunting. Are you detecting in the saltwater and on wet ocean sand, or will you be hunting dry sand and freshwater lakes and river beaches? This is important because there are different metal detectors designed for fresh- or, salt- water use. For instance, a "VLF" or very low frequency type metal detector, works extremely well on dry sand and in fresh water. It does not work as well in saltwater, or on wet ocean-water beaches. In highly conductive saltwater conditions pulse induction, or "PI," metal detectors excel.

The VLF metal detector sends 12,000 - 60,000 radio waves per-second into the ground. When the radio waves hit something conductive - like an iron nail, gold ring, coin or aluminum pulltab, a magnetic field sets up around the object and a particular signal frequency is transmitted back to the detector's receiving coil. VLF metal detectors have the ability to "discriminate," or tell what type of metal they are seeing by "reading" the return signal frequency.

An iron nail for example, has a different frequency than a silver coin. The processor in the metal detector knows the difference between the two, and can be set to remain silent when seeing the nail. However, the radio waves bounce off everything that is conductive in the sand or water. This is why VLF detectors must be "ground balanced" to work effectively in highly mineralized soil, or on highly conductive saltwater beaches. You must tune or adjust the machine to see through the "fog," or white-noise created by the salt and iron in the sand or water you are detecting. Unfortunately, this usually leads to a loss of depth and stability.

A pulse induction or, "PI" metal detector, sends out hundreds of electric pulses-per-second, rather than thousands of radio waves. While PI metal detectors do not have the ability to discriminate between different types of metal, their powerful pulses go much deeper than the VLF signal, and eliminate the problem of mineral conductivity. A pulse induction detector measures the decay rate of the electronic pulses it sends out, and looks for anomalies.

The strong electronic pulse is not conducted by the salt in the water or the iron in the black sands. Think of a Navy ship "pinging" with its sonar for an enemy submarine. If there is nothing in the water the "ping" just continues on and fades out at the same measured rate. If the submarine is there, the signal decay is interrupted and bounces back to the sonar operator on the ship.

Most successful ocean-beach detectorists, own both types of detector. The land-based VLF unit is preferred in the dry sand blanket area because you can use discrimination to knock out iron and still achieve superior depth without loss of stability. The pulse induction machine is used on the wet ocean- and black- sands, as well as in the surf.

Beach and Water Hunting Equipment

Sand Scoop - Whether hunting fresh- or salt- water beaches, you need the right equipment to recover your targets. A good beach or sand scoop is a must. Choose your scoop based on the types of beaches you will be hunting, and the area of the beach. Generally, a long-handled large capacity sand scoop is desirable in the water. Aircraft-grade aluminum and stainless steel scoops come in a variety of shapes, lengths, weights, and prices. In the dry sand, a short-handled scoop is usually faster and easier to use. Do not buy a cheap scoop. This piece of equipment is essential - and just as important to your success as the metal detector you choose.

Finds Pouch - You will need a pouch to put your finds in. An inexpensive cloth nail pouch works great on the beach, but you will need something a bit more substantial for your wet sand and water finds. Large, open mesh, multi-pocket belt pouches with Velcro closures are ideal for the water. They allow the sand and water to rinse out, and secure your finds so they are not lost in the surf - again!

Waders - Waders are the least expensive way to get into the surf at low tide. In most ocean beach situations, waders will only be serviceable to depths just above the knee due to wave action. Important things to look for in quality waders include weight; fabric thickness; flip out storage pockets; high-density neoprene booties (rather than heavy rubber boots); and a good wading belt should be included. Lightweight slip-on beach shoes can be worn over the neoprene booties.

Wetsuits - Fit is the most important factor when purchasing a wetsuit. You must try on the wetsuit, as every wetsuit manufacturer's size chart is different. Thickness is also important. The thicker the suit, the warmer. 'Smoothie' neoprene, stretches better and is warmer in windy conditions. Seams are also important. The types of seams used in a wetsuit differ greatly. An "Overlock" seam, is found on inexpensive suits. This type of stitch lasts forever but it is not watertight, and can cause skin irritation or a rash as it protrudes against the skin. A "Flatlock" seam, is a flat stitch that does not push into your skin like the overlock. It is not watertight, but does not cause as much of a rash or chaffing problem. The "Blindstitch," is a flat stitch that does not penetrate all the way through the neoprene, so there are no stitch holes. It is watertight which makes a tremendous difference. Blindstich seams are found only on more expensive wetsuits. Last but not least, wetsuit zippers - or closures, are extremely important. "Back-zip" suits are the most common type. Look for a sturdy metal zipper (rather than plastic), and thick flaps behind the zipper to prevent water flushes. You would look for the same qualities in a "Shoulder-zip" suit.

Footwear - There are dozens of choices when it comes to beach and water shoes, and many bargains to be found. Look for a shoe that meets your exact needs. It should be metal-free, and as light as possible without sacrificing your overall comfort. Beach hunters can spend four- to six- hours gridding the sand at their local beach. Comfort and breathability are extremely important.

Hat - Anyone who spends a lot of time on the beach knows the importance of a quality, long billed cap. There are several things to look for in a good beach detecting cap. Be sure the cap feels comfortable with your headphones and sunglasses on. A cap should be breathable, and offer a sun flap to protect the back of your neck.

Sunglasses - Eye protection should be a top priority while spending long hours in the sun. Extended exposure to reflected light and glare from sand and water can cause real discomfort, and even damage to your eyes.

Beach Detecting Strategies; When and Where to find treasure on the beach

The beach is divided into two-sections - The "Dry Sand" or blanket area, and the "Wet Sand" or swimming area. When detecting the dry sand areas, successful beach hunters "grid" individual sections of the beach. Start by choosing an area 50-feet long, by 50-feet wide.

First detect from the North to South. When you have detected the entire grid, turn 90-degrees and detect it again East to West. Moving slowly and methodically, you will be able to pass your coil over every inch of the 50-square-foot grid. Coins, watches, rings, bracelets, Ipods, cell phones, car keys - you'll find it all! The phrase to remember is "low and slow." Keeping your coil as low and flat to the sand as you can, while moving slowly enough to assure your sweeps overlap each other is the real key to success.

For tips on hunting the surf and wet sand I consulted with Rusty Henry. Rusty is a retired Navy "frogman," and an original Seal Team 2 member. He is a living metal detecting legend, and has been the Service Manager at Tesoro Electronics for 20-years. Rusty says rings and jewelry are lost in the water during both High, and Low tides. You can get to these treasures much more quickly during Low tide however.

"At Low tide, get into knee- to thigh- deep water to get to the jewelry that was lost at High tide by people swimming, frolicking, throwing Frisbees, footballs and such," says Rusty. "Look for streaks of Black sand on the beach at the waterline. These are always an indicator of where other heavy things like coins and jewelry will be deposited. Many beaches will only have Black sand streaks after a storm, or unusually heavy wave action. Storms uncover things that have been out of reach for many years as the sand gets ripped away. You have to act fast however during low tides, as a couple tide changes can start covering it all up again." Rusty says after a violent storm, look for hard clay patches that are showing and, "detect the small depressions that look like miniature potholes."

Before packing the vehicle with your beach gear and metal detector, be sure to check your local city and state rules and regulations. Many states and cities are now requiring you to possess a valid "Metal Detecting Permit," and have strict guidelines for detectorists. Along the "Treasure Coast" in Florida, you may detect the dry sand and shore only to the waterline because the state leases the water rights to treasure hunters (similar to gold claims). These waters are vigorously patrolled by the state. In New York, you must have a permit to detect the state-owned beaches of Long Island. The annual permit is good from Jan. 1 - Dec. 31, and costs US$40.00. The state parks like Jones Beach, and Robert Moses, are heavily patrolled. A ticket for detecting without a permit within a NYS park is US$165.00 - Do your research and have the permits and permissions required to be on the beach you will be hunting.

Whether on the dry sand or in the ocean surf, metal detecting the beach is one of the most rewarding experiences a treasure hunter can have. From pocket change and Ipods, to old coins, diamond rings and gold chains, America's beaches are living treasure troves. A healthy and heavenly place for the metal detectorist, and naturally replenished and re-seeded every spring and summer. So what are you waiting for? Let's hit the beach!

How Much Does it Cost?

The beginning beach hunter should expect to invest $500- $1,000.00 for the basic equipment needed to hunt the sand and surf. Here is a breakdown of the basic equipment needed, and the average retail cost (new):
Tesoro Vaquero (VLF) metal detector $450.00
Tesoro Sand Shark (PI, Waterproof) metal detector $580.00
Minelab Excalibur (BBS, Waterproof) metal detector $1,500.00
Reilly's Treasured Gold Pro Aluminum 6" Water Scoop $150.00
KellyCo Three-pocket Mesh Finds Pouch $20.00
Reddington Crosswater Waders with neoprene booties $100.00
Henderson 3/2mm XSPAN Super Stretch Wetsuit with 3mm Zipper Dive Boots $190.00
Eco UV Outdoor Hat $15.00
Speedo beach shoes $25.00
As Seen on TV Wrap Around Sunglasses $9.99
New York State Metal Detecting Permit $40.00
The reward and joy of finding your first gold or diamond ring - Priceless!

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Your post has amazing value to us newbies seeking to MD the surf! Thank you for sharing such!!!
 

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