OK we are in the process of building a new run for my 2 girls. My sweet hubby thinks you can just build it and thats it. I tell him they have to have shade while they are in it. They free range most the time but we had a hawk experience and are going to have to keep them in it while we cant be outside with them. Anyway i have tarps onour other one and hes like i dont want tarps on the new one. well i dont either but hello they HAVE to have shade in the summer. Any other alternitives, besides tapr and tin?