I live near Carrollton, right on the Ohio river. I want to try bowfishing for them, so I asked our local C.O. if there had been any reported in the pool below Markland dam. He told me that he had recently been out on an electro-shocking survey with the fishery biologist, and they had found some of the big-head carp, but none of the silvers.
I've been able to go bowfishing at night once, up at Markland, and all I saw was gar.