Not only do i have a coyote issue..but red tailed hawks now. I was strapped for time & just wanted to get the birds out of the barn again- So..we did this to the 30 x 30 pen in less than an hr, we had all the materials so we didnt have to spend a dime. 1 spool of twine..black would be nicer zip ties..yah day-glo doesnt look very nice deer nettting.. staple nails ? some blank cd's hung & strewn randomly on the top.. we nailed the twine doubled to the barn, then connected it to the fence posts ( theyre metal , but we put wood to make them taller. then we connected more twine, sorta like a spider web. The german shephard works best for deterring predators..but when she is in napping..they strike! Then we opened up the doubled netting , layed it acress & down the sides & connected them where they joined- voila!...hawk proof..well i hope so anyways. Its some strong deer netting, i cant imagine a hawk getting through it We couldnt do anything heavy-duty becuase of the ledge..we tried renting a jackhammer & they said no way..not on granite. So thats why the fence poles are spaced unevenly & some are crooked- a nitemare finding a spot btween the ledge to get them in the ground. For the middle we had a post with feet from our old screen room..its up on a outdoor chair for now, we will replace it with stacked cinder blocks & place the bottom in the hole & fill with dirt for better stability.