They called the race a Pinewood Derby. The year after that, the BSA leadership materials included instructions for running a Pinewood Derby, and their supplies division began selling kits. Literally millions of derby cars have been built. Other organizations have sponsored similar events under various names. Other types of model vehicles have been used with appropriate tracks.
Participants build model sailboats.
The course is made by blocking the ends of ten-foot sections of raingutter and filling them with water. The sailboats usually are blown from one end of the raingutter to the other by the participants themselves. With a Shape N Sail Derby, each race requires more time race than with a Shape N Race Derby. Therefore, organizers should select a race method that requires fewer races per participant to produce acceptable results. On the bright side, participants are necessarily more involved in the race procedings in a Shape N Sail Derby than in a Shape N Race Derby.