[wagonman76]

The stuff I used was the typical stuff 4" or so. I got mine free from spring cleanup piles. One thing I like around here, people throw away good stuff and it's fun to go pile hunting throughout the springtime. I mounted it with the screws through the round part. It holds its shape better that way (if I mount it the other way it kinks). Also the screws go through 2 surfaces for better hold down power.

I think some motorhomes came with a huge mudflap that goes across the whole back. You might be able to find something like that. Or maybe some truck mudflaps and bolt them together with small screws. Either that or maybe you could make something solid down as far as you think won't ever hit the ground, then put the edging along the bottom of that.