Chuck speaks the truth. For a very long time I was very hung up trying to shoot exactly like my heroes shoot. For instance, Howard Hill, Fred Bear, Byron Ferguson, Terry Green all shoot split, so in the beginning I thought split finger was absolutely without a doubt the only way. One day I was goofing around on a stump shoot and thought I would try three under, just to say I had. The result was a lot more dead stumps!
My point is this...shooting barebow is a VERY personal thing. Sure there are many principles that are universal to every style like alignment, bow arm, and back tension. A lot of other things, grip on both bow and string, release, aiming method, etc, are individual and should be experimented with. Listen to others and try new things, but at the end of the day do what works best for YOU. Best of luck.
Jake