Hi everyone! Getting ready to build our 16x16 run and are considering making an apron to deter predators. Our run sits near a shallow creek and we have coons, skunks, opossum, fox, coyotes, snakes and hawks that could potentially be a threat. We also have thick heavy clay soil so digging a trench to bury the fence is a big job. Wondering if an apron around the outer perimeter is a viable option for us? How do we anchor it until the grass takes hold, and how far out from the frame should we go? 12" was our thought on that??Hens will be locked in the coop at night, fence height will be 8' and top covered with deer netting. Your advice and feedback is greatly appreciated!