Originally Posted by NZSteyr
The very definition of prone is "on your front" I think... on your back is supine
True. But what we refer to as sitting is actually freestyle and only prone, kneel and stand are defined (other than using harnesses, etc) so I guess it is ok. Maybe those steep declines are easier in a prone position - at least you can't shoot yourself in the foot doing prone :-)
Some people use the bag for standing when there is a slope, just to help make the stance level? Is that in the rules?
I wish I was going to observe the Worlds :-)