I have a Cape International luggage rack on “The Bloody Beast” and I am very pleased with its looks and functionality. One of the features I like best is how closely the rack “hugs” the contours of the boot lid; however, the curvature of the boot lid makes it quite possible for items carried on the rack to rub against the paint with the possibility of ensuing paint damage. This is especially true if you desire to carry something like folding chairs in bags that are not completely flat. To protect the paint I developed the folding transparent (and waterproof) plexiglass shield shown below. The folding joint in the Lexan allows me to fold the glass in half for easy stowage in the boot when not in use.
The hinge folds 180 degrees. Ordered from McMaster-Carr, 11565A11, Clear Acrylic w/White Polyester Middle. Lexan is 1/4” thickness and is quite rigid.