Lot's of people on this site want to refurbish old boats. I think a clearing house for old, spare parts would be helpful in increasing participation.

If you want to invent something, how about a fool-proof righting sytem. All the current systems have limitations, usually limited to the skill (or body weight) of the user.

I use the most basic system: a line stowed in the tramp pocket and attached to the dolphin striker. On an idyllic day, this system is nearly perfect. As conditions deteriorate, and fatigue sets in, just climbing onto the hull becomes a chore. A system which could be deployed while still in the water would be safer, easier to use, and most importantly, would add peace of mind for the sailor concerned about his crew.