I'll save you a read if you don't care about details. Long story short - buy yourself a quality hoop from Hyperion. Save yourself the trouble of doing this, because frankly, the results we obtained were not that impressive. We spent around $800 in materials by the end of this project and ended up with a heavy, bulky, large, cumbersome hoop that broke after 10 minutes. Seriously - just get a good hoop from a pro.
Our final result, starring my girlfriend Amanda: