Originally Posted by Conor
No such thing as a sitting shot, freestyle so it looks ok as long as the butt hook doesn't touch the ground its fine to me.
could be handy in Germany then?
b. Competitors shall not gain extra support by resting their feet against any post or similar object that forms part of the course. Equally, the back must not rest against any support that is not part of the shooter’s seat.
So looks OK to me i.e. not as if they are leaning back against a tree or bank, anthill, stout blade of grass :-)