Ok, the swing draw (snap shooting) works, because it works.
The only folks who can criticize the form are those who sucessfully shoot it. The rest haven't done it yet. They can theorize why some other method "has' to be better, or try to explin why it didn't work for them. But until you've done it, you haven't done it. If you see someone do it, you will be shocked and amazed and change your thinking, even if it's you who you see do it behind the arrows you send true to the spot in a nice tight group when you try it 'cause it's not hard.
But, Deadeye, you and I have shared the experience of discovering to our amazement that we could hit what we shot at handily and casually with the simple, seeming uncontrolled, loose, dynamic move of a swing-draw-release-on-achor. A lot like the videos of John Schultz or Byron Ferguson shooting the tossed aspirin. 'Zackly how you shoot a tossed aspirin, by the way.
I posted pix of a 33/32's group I shocked my self by shooting that way, and have repeated often just swinging up, and drawing a line on the spot, releasing on the line as I passed anchor, still pulling through the shot. It's the secret to dead-eye quick hunting shots. I think these are posted under an old thread on "snap shooting" in this forum.
Works with a 58# Tomahawk and a 73# Howard Hill Black Bear. Works pretty well with a 50% Martin Rebel Recurve. Bet it works wih a Korean bow.
Here's why I think it works for them as try it:
1. It's a rythm/form/vision thing that your mind repeats astonishingly consistently. eye/hand/body-laguage thing?
2. Your vision, timing and pulling through the shot gets you on the spot, drawing a line to the spot with all focus on your spot, and no time or stopping or dsitractions to throw you off that line to the focused spot.
3. it works.