D Johnson, since you're in the testing groove, I'm wondering if you would want to test a more complex tieout, say, a star shape of tape, say, 2 or 3 pieces, at angles to each other.
The failures you are getting are almost identical to the way cuben failed in a test of catastrophic failure:
ie, it rips right at the flat edge where the force of the stronger material meets thee weaker.
I'm curious what happens if those flat edges of force get changed to angled edges, if you know what I mean.
Polypro like stuff I think can be used for some applications, and it's a lot cheaper than cuben.
By the way, Ace hardware has rolls of this stuff, Bulk Shrink Film, item number 5069190, 25 feet by 62 inches. Cost about 12 dollars.
Not sure how many mils it is, probably the same as the other window insulation films.
ziff house, I'm intrigued by your dyneema tie out idea, can you give more details, or pictures? I got some cuben from lawson at his cuben sale with the very same thing in mind, a kitchen/ rain cover tarp, but I have been waiting to make it due to the cost of the material, want to get it right the first time. Since it's an addition to the winter setup, not a sleeping tarp, I want it as light as possible, and as simple.