I am trying to figure out how to do their run. The coop is about 8' at it's peak, that issue? The chainlink pen that surrounds the coop is 6'. How can I cover this? The chainlink is against the back wall and is centered. I have a Great Pyrenees to guard them if they wouldn't fly out, but I am thinking that they could jump the 6' fence and would be lunch for the neighboring pit bull (it's in the chainlink pen beside the coop yard.)