Question for all you clark hammock experts. I plan on buying either the NA or NX-200 in the near future. I do a lot of camping here in AZ and over the last year I have noticed that about 1/4 of the time (while in the desert) there are either no trees to hang from or very questionable trees. The clark website said you can set this up on the ground like a tent. I'm wondering if any of you have tried this and how well does it work. It seems to me as long as you take hiking poles or can find something to hold up the fly it would work. I would also think you would want to set it up on top of a tarp or something that would protect the fabric from the ground.