You know, I really wouldn't know if the handholds are more effective, but they sure do make you stay put! Try the wrist bands or the rings. To make your own, all you need is some copper wire. (You can usually get copper wire for a few cents a foot at a hardware store).
Follow the directions in the book for the most part, but you can do more if you feel like it. :) Read around the forum for more suggestions!