Just got back from my vacation in the tropics. Water was very rough all week but you have to get in the water to get your finds. Did not find much but the CTX 3030 held up in the rough surf. I found a nice 5.25 gram plat ring and a small 18k gold pendent, both rang out load and clear. Very few coins to be found. But had a great time. I sealed the O ring with silicone grease, then wrapped electrical tape around the seam then wrapped a velcro strap around the clamps. Don Tyler Merrimack,NH