I have one I bought about 10 years ago, sent it to Mr Bill to customize( Jolly Roger underwater phones, Whites rod, set up the elec.) I was moving to Hawaii and took it with me. But I ended up on top of a volcano on the big Island working and discovered there is no sand only lava. So I'm finally getting around to using this detector, its still unused and I was wondering if anyone has any experience with it? Is it any good or is it outdated? I'd appreciate any pointers as I just retired and plan on using it finally.