I got greenhouse type "hoops" for free. They are metal poles. I tied them together in the center of the top of the hoop and splayed them out to make a hexagon shape frame. Then I ran 3' chicken wire around the outside and used ties to attach it to the frame. My plan was to put a tarp across the top, but even with a little bit of wind, my tarp is blowing around like crazy and I'm realizing it will never stay on, plus it doesn't attach well to the chicken wire. (OK OK, I'm obviously not a carpenter!!). This is supposed to be a simple, temporary turkey pen that I can move and then disassemble after Thanksgiving. How do you keep a tarp pegged down on a light structure like this, or am I just asking for trouble? I have 3 concrete blocks in the center of the hexagon pen tied to the middle of the frame to keep it from blowing away since the metal hoops are just setting on the ground. Help!?