One of the reasons I came to Seattle for the 4th of July was to test build our Burning Man shade structure. We were trying different spacing of the ribs and working out technical problems like the grommet holes on the tarps just don't line up. Over all it was a good learning experience and I can't wait for my next trip up when we will be combining larger tarps and Costco barns for even a larger shade structure. Oh by the way iMovie really stinks compared to Final Cut Express