I too have experienced this at my go to pond i thought it waa carp the whole ive been fishing it. Get a little rain temp drops and around dusk on the dot you start to see em. Swimming around dorcel fins. I jokingly told my wife today whatch this and i hit one in the head with my swim jig and it demolished it caught my pb large mouth 11pound 2 ounce and the crazy thing is there are bigger ones. All doing the same thing about 10 of them swimming on the surface with their dorcel fins out and they dont want to bite anything ive thrown out of them. One of them is literally laying in 7 to 8" of water if that i could of grabbed her off the bank atleast 7 plus bass. Can onyone tell me whats going on ive never in all my life seen bass act this way