I like to hunt the creeks from time to time for relics, rings, and coins. The problem I am having is that my White's DFX coil has for the second time became water logged and will need to be replaced "again" Two questions. First, is there a way to keep this from happening with the new one? Some way to seal it? The second, is there a better detector to hunt in knee deep water? Something that works good on land and shallow water? Any thoughts or comments are welcomed.