You would have to design the article to be repaired. The core material would need to be dissolvable so it can be refreshed along with the epoxy.

I imagine the repair process would be something like:

  1. Place bike/boat in mold/alignment frame. 
  2. Dissolve core then epoxy.
  3. Refill and cure core.
  4. Reapply epoxy to carbon fiber.
  5. Vacuum bag the bike/boat then cure epoxy.