This might be old school to some of the dead eye shooters on hear(Terry, Rod, etc). I have always tried and hear "corner of the mouth" when talking about anchor. I bought in to the double anchor and it helped a bunch. But I always will have one or two an inch or two left or right of the group. Today I was shooting and for some reason pulled my fingers past the corner of the mouth and wedged my thumb knuckel behind my jaw bone, then brought my nose in contact with my cock feather. I broke the nock off two arrows at 20 yds. I was hitting high, but I think it was because I was drawing the bow farther than with the corner of the mouth anchor. I took it out on my 3d course and hardly any left/right problems. Just need to readjust for the extra draw length. I thought it kinda cool. maybe most of you guys already know this. You new guys need to know . Don't get caught up in the thought that you have to anchor/corner of the mouth. This might get moved to shooter's forum, but I was kinda blown away with how much diffeance in made in my groups and wanted to present it to a larger audiance. Don Batten