Iron Patch said:
You wiggle the Explorer coil in iron, if you're taking a full swing you are missing targets because you need to do lots of rechecking sounds to get a repeat of a very masked target. As for needing an unobstructed view that is only true if you need clear signals, but that's not how it is when you're trying to work out the last targets in iron. With other detetors that generally means digging broken sounds, the explorer is a little different because it also nulls.
I've been in iron so heavy you don't hear a peep from the threshold or the tones... nothing! I've gone slow, changed directions, "wiggled it just a little bit" with a happy dance... nothin' This was around the perimeter of a 140 year old house that used to be a train station! I KNOW there were coins there... I just couldn't "see" anything with the Explorer. Wiggling everywhere would be way too slow of a search method IMO.
I would strongly encourage everyone to try that rusty nail test and see just how picky the Explorer is with sweep speed, and the angle that you are hitting the target at. It's an interesting test to say the least and even if you are a pro you will learn or relearn something for sure.
I bet if I dug every falsing nail sound I'd have some more old coins, but I would also have a huge monster bag of nails. The tricky thing I've found with those falsing iron/nail hits, is that the coil reads it differently than the Sunray probe does.. and the probe doesn't seem to false... but you don't know if you really dug down deep enough until you've dug a 12" deep hole and sifted through all of the dirt. This really wears on you and eventually I stop digging those kinds of signals after I get a few too many on a day.