my 2 cents ....

I don't "hold" my draw. When I reach my anchor I release. I can hold for a bit if I need to ... but the smoothness of the draw/release upon reaching anchor seems to have a rythym to it that holding interupts.

I don't like Asbells push/pull method either. When I shoot its more of an upright, maybe a target form with a cant to the bow - maybe like Larry Yien shoots ? It works for me, thats all I know, and it doesn't look like I'm squatting and trying to poop each shot like Asbell does

Find what works for you. Theres never perfect form in archery IMO - everyone shoots differently, however there are key elements that must be in your form for good shooting. Your grip, draw, anchor and release must all stay very consistant for your arrows to go in the same place. Those physical aspects are what practicing engrains in your brain. The mental aspect ... well, I still aint got that down so i can't say much, but concentration will eventually become 90% of the reason your arrows go where you want them too

I'm still a raw trad hunter - my thoughts/ideas sometimes go against the grain of the way trad thinking goes I think. So I may be wrong and won't know it for another few years