I have only been shooting trad for since january. I have been shooting three under, instictive. I am to the point were my groups at 15 yards are about 8". I tried placing my three fingers under the string so that my top finger was about 3/8" below the arrow nock, so that the arrow was closer to my eye and immediately my groups went to about 4". Is this a form of shooting that many people use,if any? I was still shooting instinctive.