Dave, I have responded to your post a couple of times by PMs but I probably screwed them up. Anyway when you are coming to the Quad Cities let me know and I will show you first hand how I catch snappers with a turtle board setup. There was a thread on the old BOC site where I posted a drawing but I don't know if they can be retrieved or not.
Perhaps in the spring I can get away and come down your way to show you first hand how I catch, clean, and cook them. Schoe