I shoot 3 under with middle finger in corner of mouth. I actually try not to see the arrow. When I pay attention to it Im not focusing on my spot.
Not tilting your head is a huge issue for me. My arrows will be good yardage wise but to the left or right
I got the rick welch videos for B day a few years back...
I set my arrow up like he teaches to have the fletching touch my nose...
I really like the consistent release 3 under gives me... My lighter weight bows would have me torquing or plucking the string at times.. and that arrow would go way off!!!