Hey, how about some vendor making a nice sunshade for the roof. Not a flimsy part, but a real sun blocker that fits with the screen back for summer use. Pattern it, but my photo up there, whatever design you want, but something that would insulate the top. I have a fifth wheeler that we will use in a couple years when we retire. It sits out back and by itself in TN sunshine the thermometers inside exceed 99 deg. I bought a roll of bubble wrap from HD and that dropped the temp by over 15 deg when I put it inside each window. Not as pretty as what I'd buy for my smart, but you get the idea.