I will be using my 'new-to-me' (10 mos. old) ATX with stock coil for nugget shooting both on land and in water on exposed bedrock. I would buy and use the 5"X10" DD Infinium coil for my ATX for land use to lighten the package, but not sure if it can be submerged underwater since Garrett has a notice about it "not being suitable for underwater use" on their web page. Maybe I could completely coat (or dunk) it with a product called "Plasti-Dip" to make it waterproof (?) I don't intend to scuba with it, just use it underwater a couple of feet in a creek while keeping the ATX control box above water.
As well will probably take my fantastic vintage GB2 out to get the 'crumbs' the ATX misses. Ground here is moderately mineralized, with a few minor areas that are hot.
Beav