Wish I could give a good answer, or even a ballpark guess on this one. Surface clutter seems like it might be the only answer, but I don't think it is. So here's a guess completely pulled from the posterior area of a pair of Levis.......In order to stump everyone on this forum, Rickie hung a line with about 6 different size/density jigs off the front of his boat. He hung them so that they would be in the 2D cone only, and not be picked up on SI or DI. We see fish as both spots and streaks, indicating motion, but the 2D band is still. We only see it in 2D, which might mean it is blocking the cone only. And the fact that one of Rickie's quizzes has been posted for two days with only one response means he has succeeded in stumping us!