Glad to hear that the Elkington Short Game Video is worthwhile.
Candidly and in my very humble opinion, the other video being sold on Elk's "Secret in the Dirt" website, "The Most Powerful Move in Golf" is a complete waste of money. I know I wish I could get my money back.
Martin Ayers' idea to wind the right forearm ("turbo-charging the arm") in the backswing results in anything but a FLW. This video (to my newbie understanding) doesn't adhere to any TGM concept.
Buyer beware.
If it's my lack of understanding, please feel free to correct me.
p.s. On the other hand, I'm a fan of Mike Maves and his analysis/interpretations of Ben Hogan's swing. It was what drew me to the SITD site...