I have noticed lots of sag and pooling of water when I have tarped structures in the past. Instead of adding wood or metal support I was considering ziptying snow fencing tautly across the frame.
In addition to providing support, I was hoping I could grow a vine that could not normally over winter in 6a, thus getting shade in the summer and letting sun through in the winter.
Does any of this seem flawed? Any suggestions on vines?
Thanks for the encouraging news! I went ahead and tried this on my in-law's car port, which gets new tarps every year, and usually collapses under snow or even rain. So far, very good! For mine, I think I will stretch chain link fencing, thanks for that idea!