Went to Knox Lake, north of Mt. Vernon, Oh. Set up to catfish, Got skunked by the way, and saw swirls in the water. They were all over the lake. Huge Schools of Huge Shad. Hundreds, 10 to 12 inches long. I forgot my castnet so my boy hooked about 6 of them. We brought them home and froze them. Anyone else seen anything like that. I though they were Carp.