Enclosing the underbelly: a few design questions

I think I listed the thickness of aluminum angle I used for my underbelly project and IIRC it wasn't the lightest one but the heavier one. The thin angle just wasn't stiff enough when spanned over 6' and holding up the coroplast material. I think I might have paid around $15 or so per piece back in 2008/9. For me money was not much of a concern up to a limit, but added weight was a concern.

Larry