I have a 1976 olds delta 88 hardtop not a convertible. The car had a vinyl roof but needed some rust fixed. Currently the old vinyl is off the roof and the bondo is sanded. Personally, I do not know much about body work and paint. But I do know the bondo should never get wet. The problem is that I have to drive pretty far before Ill have a chance to put a new cover on the roof. What is the easiest/cheapest way to seal the roof and bondo? I dont mind how it looks because I will be installing the new vinyl soon. Can I just buy some spray can primer and call it a day? What would you do?