One of my first projects feeding an obsession for wind power and engineering.
All the sails were hand sewn from tarp, and are still functional today.
Note the wooden universal joint designed to hold mast to skateboard.
This project ended with my trial run at the beach parking lot. Of course my trial conditions included 20+mph winds. I covered about 50yards in 2 seconds before developing a nasty speed wobble and inevetably crashing hard without pads or a helmet. (I hope it knocked some sense into me)