I was hunting waist deep at a popular beach for a few hours. I went home and charged battery (Nox 800) to full charge. 2 hours I went to a different beach and after 2 minutes the unit shut off and wouldn't power up. When I got home 10 minutes later, it powered up and seems fine. Is this what happens if water gets into control unit? I contacted Minelab Service Ctr. and left a detailed explanation including serial number. Maybe I shouldn't submerge the control unit again because if it happens again I could loose using it for the remainder of the year. Maybe I got a "lemon". Maybe I should have purchased the Excalibur. I was hoping that Minelab had corrected the leakage problem before I purchased this unit last year because I really like its performance and design features. I guess if I knew beforehand that I would be submerging the unit, I should have purchased the Excalibur or the CZ21. I think I made the wrong choice. Oh well.