James I've seen pictures of folks that have done this. On a
Scamp, the back window is a different size than the front..otherwise a
Scamp owner (I realize you have a Boler) could order the gravel shield and install. Also the back glass is flat, where the front
fiberglass is curved. Have you considered getting a flat piece of
fiberglass (used in shower stalls?), cutting it to fit and installing that? You could also buy the black (or other color) trim that has the metal core and rivet that around the outside to finish off the
fiberglass rough edges. Just a thought.