Just a thought. I've gone back and forth between split and 3under. I definitely shoot better 3under, especially at longer distances, however, I sure like the arrow control of split and practicing fun/awkward shots with extreme canting of the bow. What works for me is that I anchor middle finger in corner of my mouth for split shooting, but anchor index finger in corner of mouth for 3under and have essentially the same sight picture. Certainly not standard archery procedure, and I'm sure archery coaches are shaking their heads right now, but it works for me and I have fun doing it!