I'll accept your point about it not being your rule, I should have said the rule that you were quoting as working well. However, I stand by my comments that it's impossible to police, and potentially dangerous with modern bows, whereas the AGB field rule is easier to police, easy to understand, and if you can't draw the bow without aiming higher than you need in order to hit the target in my opinion you have no place on a range. You don't have to be on aim through the entire shot, just not aiming high, so if you want to take your bow hand above your head, no problem, just take the string hand to the same height and keep the arrow roughly horizontal, then come up to the aim point when you get to or near to full draw.
Maybe the AGB field rule should be adopted for target and just have one rule for both.