RE: 3 fingers under??
I shoot both ways. In a treestand in awkard positions, 3-under is often better suited for me. While roving, split finger. Hiding behind a tree, 3-under. Killed ' em both ways though (missed them too!!). My long range accuracy is better with 3-under due to the shaft lining up with the string under my eye.
Also, I shoot differently depending on my bow. For my fast takedown, I shoot 3-under most accurately. With my ' 68 Bear, I shoot split the best.
Go figure.
chad