I know I've heard it's impossible, but I hope that my run is going to be predator-proof. My goal is to be able to leave the door to the coop open so they can come and go as they please in the mornings and evenings. I live in a development that backs up to a greenspace with trees. My main concerns are raccoons and hawks. I have a 6x12 ft dog kennel run that will be completely roofed with plywood and hardware cloth and the sides of the run will be competely covered by hardware cloth attached to the chain link. The run will be on a cement slab so there isn't any possibilities for digging under. Does this sound like a good setup? Should I be concerned about anything else getting in?