We "bought into the hoopla" becasue we found the PUGs actually work - I was able to compare, literally side-by-side, our old and new popups with and without them, set up in our driveway. The first PUG, for the old pup, was the high wind version, with one shock cord, and using clamps on the sides - in the winds we encounter, even hefty clips popped off. We bought super high wind ones for the new pup, and had Velcro added to attach under the roof edge. I can sew very well, so contemplated making my own. I added up what all the webbing(for casings for the SHW version), shock cord, clips, and fabric would cost, I was very happy to order them from PUGs, and have them the correct size, etc.