2 questions for you:
Where are you going?
What was wrong with the polycryo or window film? It is lighter than cuben, no?
Ok, that was 3 questions.
Well what I have found, and it could be wrong, is polycro is basically the same stuff that is used for the laminate in cuben fiber - so like cuben fiber without the weave. My concern was it would wear out too quickly.
I'm tapatalkin' ya'll
Would the polyester ripstop like at kitebuilders.com work for you?