There are a lot of good suggestions here, no doubt. But, still, I think something is missing in this conversation. My post is only applicable if your mission is bow hunting. Now, if your goal is target - best talk with someone else.
I would a agree that good form is important, and consistancy goes along with that.
Still....
I reread my book by Jay Massey where he talks about building his own barebows with a draw length shorter, as with the American Indians. He discovered that he didn't have an anchor as before, then discussed whether or not he needed an anchor....
That was something I tried, to see what he was talking about. And, I understand exactly what he was writing about.
Now, mind you, I wouldn't recommend any of this for someone who's developing form. But, after you have the basics down, you must (and I say must) experiment. Why do I say that? Heavens, I've never had two shots in the woods similiar to another. So, that exploration with your bow is important to your knowledge of what can be done, and what well may be done when you're in the field.
Asbell talks the same when he discusses how a basketball player must learn the basics but then when you see a professional in a game, you see shots that are not "the correct form."
Nothing I'm saying here is to discount the other posts. I'm just suggesting that the subject is fluid as should be your approach to bowhunting once you're impressed the basics into your skull.
Me? I'm depressed sitting here writing on this forum because "the man" tells me I can't go hunting (just yet). So, all's left for me to do is push deer off their beds or stay home... neither am I enjoying because the weather is drawing my spirit to hunting.
Good luck to ya'all.