Hi Steve
I have a seahunter mkii , it a PI dig all machine.
I have had the seahunter mKII for 7 years and at one stage i was going to the beach 3 times a week.
The discrimination they talk about on the seahunter is Rubbish, You use that and you will loose heaps of depth.
With the 8" coil you can (after some time ) you can pick the sounds , bobby/ hair pins vs a good target.
New bottle caps sound like a coins, (in australia)and the rusty ones, i can tell by the sound.
My seahunter mkII finds me about $1500 a year plus bling , but i take about 500g plus of trash out of the beach each time.
The Battery i use are alkaline and last approx 20hr, I just use Vaseline on the rubber seal and never had a problem. I have been underwater with it and its had a few hard knocks and the coil is tough as rocks too. NO coil cover needed.
It has no volume control , and its loud I last about 1 hour and my head hurts, because its used under water and has to be loud. I use mine with the elimination to ZERO and the threshold to ZERO and I adjust the elimination up a little then down if it goes noisy. This runs in a silent and peaceful mode , and will go off when a metal passes unde the coil. ALso leave it on standard trash elimination never use descrete trash elimination.
In the water, when the water level raises and falls it will sound off(waves) but you can pick it. Sometimes going from wet to dry will give you intermittent sounds , by rubbing the coil in the dry sand (moving left to right) it seem to ground balance it and away you go.
I would recommend you dig every signal , and listen carefully , try and guess whats going to come out of the ground, you will develop an ear for it .
Swing speed well I normally swing left to right in .7 to 1 sec. You will cover more beach and find new drops, rings, coins and anything made of metal .
You will get about 7- 8 inches down , if you swing very slow 2-3 sec per swing you get 12 inches down . I also purchased a 14X10 coil, all the sound are same but you are looking at digging over 15" . I went from a hand digger to a shovel.
It took me over 3 months to get a handle on this beast. SO stick with it.
NUMBER ONE ADVICE go where the people go, if the beach has 700 plus people go there you will find heaps, don’t go to beach that fisherman fish from you will end up wasting your time , (I only do these beaches once to twice a year).
If you have 700 people on the beach and they stay for about 2 hours then in a day you could have had 4900 plus people on beach per day , go at 4.30 pm to 6.00pm keep clear of people on towels , and swing the empty areas , you see where the people have been (ie rubbish , drink containers ect ) if you dig every thing and take the rubbish (that u dig) the next time you came back its fairly clean .
You go in the PM due to fact all council beach cleaners start like at 4 in the morning , and most other MD Are on the beach very early.
Detecting the wet ,I have been neck deep and ankle deep the best find are low tide ankle to waist deep.
People will come up and ask you to find stuff they have lost (get a detailed description of what they are looking for you may find something good and they claim it to be theirs) . I make every effort to help out , if you spend more than 10 min trying to help I normally say you must have lost some where else, im here for an other (time ) come back and ill see if I have found it .
Ok I have crapped on for ages any way I hope your still awake.
PS the Explores miss the fine gold chains the seahunter gets them. SHHHH don’t tell any one..
If you have any more Question I would be glad to try answer them.
Andrew
HH