Whatever bag you get, just find a way to loop the coil cable once right before it's plugged into the control box. The Minelab bag has a loop for doing this- looping the coil cable around it (not tightly either, just nice and lose wide loop to take the stress off the base of the coil connector). For water hunting, I don't close the top of the Minelab bag. Instead, I poke a hole in the bottom of a zip lock bag and then stick the GT into the bag and the coil cable goes through the hole in the bottom of the bag and plugs into the GT. Once I'm in the water, I adjust my sensitivity until highest stable and then close the zip lock. The headphone plug is poked through the bag to plug that in. The hole around the coil cable is sealed via a tied rubber band. Then the control box is slid down into the Minelab bag. You have to of course run the coil cable up through the bottom of the Minelab bag first, then through the zip lock bag, and then screwed into the control box. Then the control box slides into the plastic bag, the plastic bag into the Minelab bag, and then your set to jet. The big perk to doing this is that the GT is for the most part waterproof unless you dunked it under water for several seconds or so, and even then the only place water can get in wood be at the hole that the headphones was poked through. It aint going to come through the hole the coil cable goes through thanks to the tied rubberband. I never worry about a rouge wave, which isn't a big threat on lake Erie anyway, but if one did come I'm sure the GT would survive it and stay dry. My biggest fear is tripping into a hole or over a bolder in the water and falling under. Even then, though, I don't think much if any water would get in in those few seconds. And, if it does, since it's freshwater, I'm sure once dried out it would work fine again. The key is to turn it off and remove the battery as soon as it gets wet to avoid potential problems, but even if you are slow to do that chances are the electronics won't get fried.