I bought corrugated plastic roofing already, 8 feet which will exactly fit the run. No overhang at all whatsoever. My coop has overhang though. I want to keep the rain out of the run so it stays dry. It rains a lot in the winter in oregon and it gets windy. So what would be the point of an overhang? Or do i need to take it back and buy 12 foot panels and cut them a whole bunch, which is what im trying to avoid. Thanks for any help!