"Practice makes perfect" is a misquote. It should be "Perfect practice makes perfect"
so "sloppy practice makes sloppy" and thats why we all work on our form in practice.
But i've read many stories where people say "I don't remember drawing the bow when I shot the deer".
Its you habits and your instinct that matter.theres a little bit of magic mixed in there, maybe a whole lot of magic.
It's acually a right brain/left brain thing.
Your right brain knows how to shoot a bow because of the last 10,000 arrows you've shot.
Your left brain is like your know-it-all brother-in-law telling you how you should work on your release, your back, your anchor, Pick a spot, pick your nose ect.. ect..
In the end It will be your "bad habits" that loose the arrow at the giant buck or the timid doe.
It sounds like your bad habits can "hit the mark"
Lucky man
Just don't take your Know-it-all brother-in-law to the woods.
Good luck,God bless and have a great season.
Scott