I'm hijacking this thread.... RECYCLERS ATTENTION.....
Has anyone picked up old/obsolete plastic billboard covers?
They seem to last a long time out in the sun....
I'll bet the outdoor adverts people just throw them away: why should we keep buying Chinese tarps for boat covers? Even the good silver ones die in a few years.

Dacarls:
A-class USA 196, USA 21, H18, H16
"Nothing that's any good works by itself. You got to make the damn thing work"- Thomas Edison