You know I had some real doubts about this thing but I just got back from the lake and I have to say it has a lot of promise. The wind was horrible on the upper end of the chick so I couldn't really test it the way I wanted to BUT I did manage to snag a couple of cats even with the gale that was blwoing in! I rigged the thing a little different than they say you are supposed to but it worked just like they said. I'd cast it out, it would lay on it's side until the weight hit the bottom, then it would raise right up. If you were bank fishing or fishing from a stationary or slowly moving boat it would be an amazing thing to have to get down really deep. Because of the wind I was only fishing it in about 10 feet of water on a little drop using shiners. I managed a couple of small channel cats before the wind got so bad that it drove me off the spot. It was wild watching how sensitive it was in 10 foot of water! The least little nibble and the thing would lay over on it's side. But you CANNOT use this thing with a drifting boat. The weight of the bobber will simply cause the bobber to sink as it is being pulled along. The bobber contains a magnet, the brain (a ball bearing) and then the body which fills with water and sinks it until just the foam is sticking up. Wind does not move it at all.