Themost consistentway to do this is to simply quit holding the string. You don't release it or try to flick you fingers out of the way, that causes plucking.
This is a hard concept to describe in written words, but consider that no oneis fast enough tomove their fingers out of the way of a sting. The string has to push the fingers out of the way. The most consistent way to do this is to simply relax and let the bow do the work while your hand moves straight back with curled and relaxed fingers.
Good post. Personally, I have to keep my drawing hand and fingers totally relaxed. I can not think about the release at all.If I find myself thinking about the release I often concentrate on pulling the draw shoulder straight back (which you really can not do) while at full draw to "trigger" it. Sometimes I have to "trick" myself not to think about the release.
I believe Byron, focuses on a final inhale from the diaphram to trigger his.