Setter, are your feeding TIMES still the same as before? I know nothing about YP but your bluegill should be doing something.My pond is about the same age as yours and the only times (other than winter) have I seen no activity at all was after I either had a otter or a water turkey show up. Even after I solved the problem it seems each time it took about 2-3 days for them to get "back" to their regular feeding frenzy. Hope for sure that's not the problem you have. I'm sure if you give them a day or two whatever has them "turned off" they will be back. Best of luck to you.

Dear Alcohol, We had a deal where you would make me funnier, smarter, and a better dancer... I saw the video... We need to talk.