Well I know it’s been a while but I’ll give it a shot anyway. I’m having the exact same problem. It’s like there is a void when I have the bottom set between 15’-20’ and distance between 30’-40’. The void is a ball shape from boat out to about 10’ and 8’ down to bottom. It’s like anything that goes in the void almost disappears. I can swim a 1/8oz jig from 30’ out and run it at 12’ deep and I’ll be able to see it good all the way until it gets around 10’ from boat then it just blurrs until it gets directly below the boat. Any help would be apprecheated. I’ll take some screen shots and video this weekend. The arc shapes icemonkey described are identical to mine.
