Hi, I have these plastic bumper covers on my van. Its got these molded in grooves and pockets for appearance. But obviously they make the aero worse. So my question is since these bumper covers are made to be flexible. What do you think is the best permanent method to fill these?
Because bondo/fiberglass hardens rigid which defies the point of them being flexible. Personally I can't think of a flexible filler that is functionally the same as bondo/fiberglass. Ideas?
