I also have to agree. Monkey huts or variations of them are the way to go. Cheap, scale-able in size, flexible in design, relatively easy to put and can offer a very large shade structure.
My first erection! It wasn't difficult to put up alone as the PVC slipped over the hex bolts on the trailer and the one's threaded into the ground.
Decided for the playa I would construct a board that has all the necessary accouterments, so that all I have to do is secure the board to the playa using 4-6 14" x 5/8" lag bolts.
This is the ledger that's attached to the trailer with the 4, 5/8" x 6" hex bolts affixed.
I have to second the link to the chromatest site, it provided me everything I needed to know in detail, so that I could design my own.