[Cruiserdrew]

I can only speak for Jay's and Derek's but the weight is in the super heavy duty canvas they are made from. It's very similar to the canvas expedition tents you stay in in Africa. The canvas weave is so thick that rain doesn't even phase it. I know the other Derek(dclee) sets up a backpacking tent on top of his roof rack-that's the poor man's solution for sure, but it works. Nylon tents while light in weight do not do well with medium to long term UV exposure, but well cared for canvas lasts a long time even in full sun.

I was thinking of a night I spent inside my 80 in Panamint valley. The wind was blowing 60-70 mph all night due to a huge winter storm blasting off the Pacific Ocean.. It was enough to constantly shake the 80 on it's suspension. I was wondering how that big sail on the roof would hold up in that? Every one of the ground tents that night got completely blown out and were down on the ground in the morning.