Here’s a video presented by Chris Spealler over at CrossFit Park City ( www.crossfitpc.com ) on double under efficiency. What we typically see with athletes is that some get the double under…some don’t. It takes time and practice and a definite focus on technique. Check out the video!
“Duck Fouble-unders!”
[youtube http://www.youtube.com/watch?v=h7XjUbUpeHE&w=560&h=315]
Thank you, I have recently been looking for facts about this question for a while and yours is the best I have found so far.