I tell you chicken liver will catch them, I was fishing meldahl dam on the ohio river and we would fish in certain places certain times of the year and catch the whites and hybrids. I typically fish plastic but one time there was a little young kid or younger fella fishing with livers split shot and a hook and just catching them one after another. I would throw my artificial in and get nothing, he would throw the livers in and bang fish on. I have also noticed that river hybrids also really like soft crawls.