Underwindpower... I have not heard of any serial problems with Vario or Entity straps, but I'm sure it's possible that you've got a bad one somehow. Again, contact your dealer if you think its a warranty issue. As far as testing, we've been using the same basic design for our Vario straps for years and people have been generally pretty happy with them that whole time. That said, everyone has different feet/taste in what they want in a pad/strap setup.
Dan, thank you for your personal response. The Vario footpad/straps I have are the white ones from a few years back. The problem I have with them is entirely due to me using them in the surf. The velcro on mine is not aggresive enough, and has to small a contact area to withstand the whitewater and wipeouts. I've solved the problem by threading a pair of thin socks with the toes cut off, over the flaps, so that the waves have no purchase.
Again thanks for taking the care and time with your North customers.