Plastic campaign signs-Muddy
I agree on this. The name of the stuff is evading me right now but it is basically plastic cardboard. Chloroplast? Anyway, it would work good in theory as far as weather is concerned. The problem with backers is the holes. They get shot up and need replaced. You're gonna go down and put up paper, just take some cardboard with you. That or put up steel and take a paint can.
