about as close as you can get to pulse detector depths? I'm working a very mineralized beach (hard packed dry sand) but with tons of nails and rusted bottlecaps...........I'n told that a pulse is almost useless here. A fellow detectorist suggested that I could get the best depth that is closest to a Pi if I used the CZ3d for example. He once worked an area like this one, on the Oregon coast with just a tiny bit of discrinmination, and found rings and jewelry mixed in with the nails. He swore that the CZ's were the way to go. Anyone else been there and done that???? Should I get a CZ3d over a pulse? Advice and tips are greatly appreciated...thanks.