One of the burning questions right now is what material is ideal to cover the metal framework underneath. Seeing that we will need a few dozen sheets of it, cost and weight are the main challenges. I made this image to help brainstorm the problem:

This material is looking promising for everything except won't curve around corners - as is. Incredible strength to weight ratio. Much lighter at 4'X8 and more rigid. All weather. If you get it in black then you don't need to paint it and I would think scratches will barely show. http://corrugatedplastics.net/4mmFlutedCorrugatedPlasticSheets.html

What material do you guys recommend?