I've done this dropping my Right Knee down and back, almost as if dropping to one knee, mostly to get it out of the way. I've shot a few deer from my knees, hunkered down in brush, or against a tree, but not turkeys, but it's the same concept. Shooting from a stool is a little different, but by dropping that knee down and out of the way, it gets me into position.
This sounds like what I do as well. Drop my right knee down and back and keep my left knee 90 degrees to the target. Those little chairs are about the right height that my right knee is touchingthe ground.
I have yet to shoot a whole, or even put a nick, in a blind with a broadhead. BUT I've seen it done twice. Those gobbler guillitines got quite a spread that seem to reach out and grab things asthey leave a blind!