Keppy, I am in the water all the time and I didn't like the floating coil, but I am picky. It does have advantages for the coil to want to float as when you dig a target the coil floats off the bottom and doesn't beep on a new target. The coil floats more in salt water too. Plus if you decide to hunt the dry sand the coils less weight is nice. Many will place a sand filled sock on the shaft while water hunting as the 300's coil is foam filled and floats more that the smaller orginal BHID's. I liked the operation of the BHID 300 and carried my controls in the bag hanging from my neck which made the coil float even more.. I never had trouble with the newer ones leaking with the newer O ring or any rubber boot problems. I just couldn't get over the floating coil when none of the other water detector's coils floated and really were neutral buoyant.