Twp pieces of Polycarbonate were used to accommodate the compound curve. No I didn't us the tape. I will have to give that future consideration. One issue that will inevitably will crop up is dust, etc. lodging betweent he round tube and the plastic which will be noticable from the outside. I wonder if the black tape will help eliminate that. As it is now, replacing the polycarbonate skins would be similar to replacing the windshield - drilling out the rivets, using the existing plastic for patterns, trim and drill, cleco and rivet. Probaby half a day.
I did the whole thing to eliminate the warping that was so common on the fiberglass shapes that conntected upper and lower panels.