Disclaimer: This post was originally posted by Hero Member, Perky. This user is located in Bedford, VA; USDA Zone 7A. This was originally posted on August 4, 2013.
I know this reply is a bit late, but I just wanted to thank morganmac for that video link and to share my experience with the technique.
I am following that pruning technique with my one yellow one-ball, my two Cavalli, and my two Tiger Zucchini plants. For support I am using the Earth Box staking system and supporting the vines with ribbon tied to the netting. The vines themselves tend to turn as they grow, so I have to rework the ribbons. But I have been pruning off all the older leaves/stems as I harvest the Zukes. It makes harvesting much easier not having to fight my way through all those prickly leaves. Pruning the leaves off that way also allows me to get in closer for Powdery Mildew inspection. Leaf pruning also helps prevent the plants/boxes from being wind catchers, especially on a second story deck.
Perky