I have a shed on my property with a metal roof. I was thinking that maybe I could plant my hops on the west side of the shed (south side won't work), run them up the side, and up the grooves to the top of the shed (around 25 feet total). I'm in northern Iowa, and it gets pretty hot in the summer here, just wondering if you guys think that the hops basically sitting on the hot roof would hurt them? They would get plenty of sun at the top of the roof...but would it be too much?