I want to make a hoop coop. Specifically, the Chook-a-holic Permanent Hoop Coop: https://www.backyardchickens.com/articles/permanent-hoop-coop-guide.47818/ What I'm thinking is that I can put a wall down the center (from front to back) and put a rooster on each side, each with their own set of hens. What kind of wall do I need to keep them from going after each other? Can I make a "stiff tarp wall?" Or do I need some kind of wooden wall? They've gone after each other through the metal quarter inch fabric. *sighs* Thanks. PS. No, "the freezer" isn't an option. Nor is getting rid of one or the other. Please don't mention this, it upsets me.