Geesh, I am sorry I posted on this thread. I almost posted again much earlier to say that buckeyebuckhtnr made a very good point, but I was too late.
I hastily made it sound as though I meant having your hunting bow not sighted in and tuned well was not important. I didn't mean that at all. What I truly did mean that when hunting using the level on a sight in the actual situation is not that necessary. Probably sticking my foot in my mouth again but I never look at or notice my level when taking a shot at a deer. In fact I removed my level on my last sight AFTER sighting it in and tuning my bow the best I could before hunting. I do believe using it to help achieve good form and good practice is benificial, and of course I don't think anyone wants to use a cockeyed sight. You see I am somewhat of a canter too, and most new sight designs do not allow EACH pin to be individually positioned left or right. The older sights allowed for that and for longer distances a pin could be moved farther in to compensate for cant. I don't cant as bad as I used too.........you really can't cant

when all your pins are moved together left/right by making an adjustment.
Personally, I am working on the canting. I have achieved much better form by simply finding a consistent anchor using my nose as a reference point as well. I completely understand SBGobblers posts. In hunting situations, many times a shot cannot be taken while the bow is vertically straight up and down. Practice and consistency is the key along with knowing your own limits in hunting situations. In fact my best shot while hunting was at a 9 pt. buck while stretching around the tree at 37 yards(he was almost behind me)....perfect double lunger. I don't quite remember if I was holding perfectly vertical or not, but I remember being relaxed and holding my 30 yard pin slightly higher on his chest and had a very good release.