A previous owner long ago replaced the canvas pop top with black netting. It's flexible and keeps the bugs out.
Note in the top photo the white cord ringing the netting. It's bungee rope with a little tension and pulls the tenting in nicely when the top is lowered.
No manual tucking required. In any more than a light
rain I just lower the top.
I also wanted a little light
wood look for the interior. The bottom photo shows three pieces of oak veneer paneling. I just attached it to the bottom of the window frames with small brass hinges.