Man I would love to see that Dan Quillian video. I started using this method myself and I find I'm much stronger on the shot. I believe the even distribution of forces, push/pull balance each other out.

Longstick, my copy has disappeared, and as far as I know there are no more. Dan didn't have many of them made. By today's standards it was pretty crude- Dan did it himself with a Super 8 video camera. The instruction in it was solid, though.