I dont know but I think that stained water is messing em up for some reason. Last week the water was stained from the new ramp up in dix just above the waterfall to Cooks point. I found clear water at cooks and started trolling down lake on the right side of the lake and all of a sudden the fish finder lit up. About the time the shad rap I was trolling got there I had a fish on. I threw out a marker bouy and started casting that area with a #5 SR Shad Rap and caught over 40 whites and hybrids with a cpl in the 8 lb range. Brought 15 of the smallest home and they ate real good. Good Luck.