fiberglass cloth glued down with ABS cement will do the job. Epoxy will do it. Whatever you use be sure to scuff the bottom of the trunk for better adhesion. Here's some information on motorcycle plastic repair and products to do the job.My travel trunk on this 84 1200 is all broken at the bottom. Doe anyone have any tips or suggestions for repair? Epoxy? Glue? Plastic welding? Reinforcing? Any information would be greatly appreciated.