RE: shooting form
The archers with the best form in the world, the olympic recurve archers, all shoot with a straight arm. On somethe elboweven appears to belocked. It is the only way to get a perfectly repeatableform arrow after arrow.
It is far less critical for compound shooters due to the letoff and our rear sights. We don't have to be as perfectly repeatable with our form as the OR archers. For most, it would be better if we did, but Jesse and other, prove that it is not necessary.
Archers who are strictly bowhunters may be better served with a bent elbow. This allows them to shoot from awkward positions and still maintain full draw. If they don't have some additionaldrawin researve, they may creap on the shot in some positions. This is also why bowhunters will usually do better with a more open shoulders that target archers.