Mt Whitney Zone Forums General Discussion Tyvek - the best ground cloth?

Check out intothewind.com, a kite making retailer. They sell Type 1443R Tyvek which is slightly thinner and more cloth-like then the home wrap version sold by Z-packs, Home Depot, etc. I've tried both versions, and the 1443R so far has worked just as well without the crinkling and stiffness of the home wrap version.

At intothewind.com they sell 60" wide pieces in 1 yard increments.