It's generally necessary on most bows to raise the nock height to 3/8" to 3/4" above center to facilitate proper arrow flight with '3 under'. This will also naturally put the hand, eye and arrow in better alignment relative to the target. The added noise some are noticing is due to an improperly tuned bow and/or misplaced silencers. Fix those and it will be deadly quiet. I use a multiple anchor point system that includes my middle finger tip to the corner of the mouth, nose touching the cock feather and the string touching the eyebrow.
There is no doubt, whatsoever, that this has consistently been the most accurate method for me and nothing else even comes close. At every close yardage mark, the arrow will appear in the periphery below the target and my brain has learned to subconciously 'gap' the arrow. At 30 yards, I can place the arrow tip on the target and shoot. Beyond 30 yards, the arrow is now some distance above the target and my brain then reverts to 'gapping' once again. It is simple and very, very effective.