...in regards to pulling and releasing the string, do you pull the string to the wall, set your pin on your target, then using back tension, pull your arm back while at the same time relaxing the muscles in your fingers so the string will "escape" (as you put it?) did i understand you correctly? (i'm just wanting to make sure.)
Yes, you understood perfectly.
As to the WB... Danged if I know if they'd work for fingers shootin'. I've never tried it. I've heard some guys say YES, some say NO. I really can't see how one could possibly work for fingers shootin' (at least, not very well) because it would have to interfere with the arrow's paradox. To go along with that, there's no way the fletching could possibly be going thru ithe biscuit on a straight path, which would cause undo wear and tear on the fletching, not to mention robbing you of even more speed.
You do realize that you'll likely lose some 5-10 fps by switching to fingers, don't you? For myself, I find the convenience of shooting with my fingers more of an advantage than a few fps of arrow speed. However, I would not intentionally handicap myself by using a rest that will rob me of even more speed.