As much as possible, an archer should always try to maintain a 90 degree angle between his bow/drawing arms and his body when shooting form ANY angle, no less from an elevated position. The only way to do this is by bending at the waist, something that is NOT shown in the pics on pages 41 and 51.
Both those pics show a bowhunter wearing a body harness. Now, I've never used a body harness when I treestand hunted. I used a safety belt that attached at my waist. I used to have it adjusted so that when I had a shot I could lean out from it so that I could bend at the waist. Maybe with a body harness you can't do that, which if true would make them an unsuitable choice for treestand bowhunting. But like I said, I've never used one. Maybe those of you that have can set me straight on this.
Either way, what those pics show is not good archery form for whatever reason.
Offer No Apologies.....
NRA Endowment Life Member