Taxid,
I have a large pen with Pheasant, Rabbits, Chickens, Pigeons, and Ducks and it is covered with netting to deter hawks and falcons and it works great. I will send you a picture in day or 2 and I think this is the route you should go, albeit your choice. Last's for years and all you would need is a few posts at what ever height works for you.