Tom, I use my Vaq on the Texas beaches and I have no problems, not much mineralization here. Once in a while I get a small pocket of mineralized something and have to pass it by, but not very often. I hunt right down to the waters edge and sometimes submerge the coil a couple inches, with no problems. I can't run in the boost mode and usually run the sens below 6. Dug clad coins from 6+ inches.