Attached to our chicken coop is a covered run, which is attached to a fenced in field. Well, I should say WAS a covered run. We had attached the corrugated fiberglass panels to 2by4s that ran the span of the run. The wind tore them up and off and we are still looking for some of them! What can we use that is stronger/heavier, but will still let enough light through so some weeds and grass can grow?