Scott,

I agree that the body rolling around on the hook without cinching it down tight with thread would cause me headaches, too (I have not attempted to tie these flies, yet). Watching his videos, it doesn't seem to bother him that it rolls. He does super glue/lacquer the thread wraps pretty well at the end. Maybe applying some on the shank when first attaching the body would help. I don't know. Like I said, I have not attempted these yet so I don't know how infuriating it would be. I have made a few bodies with a drill and it is pretty easy.

Joe