Hold the bow whatever way it'll yield the most accuracy with the most versatility, for bowhunting ... which will always prove to be some form of bow cant.
Deer and piggies and bunnies and most other game don't stand still long enuf, nor at the right angle, nor in the best of wide open locations for any bowhunter to always employ that "perfect target form".
Practice for hunting as if yer actually hunting, in the woods, up a tree or stalking the bushes. Pick out roving targets at good shooting distances that force ya to kneel, twist around, and shoot from many varied positions and body angles. All this can only make ya lots better at scoring when yer really on the hunt.