James Rudholm has a fascinating site covering quite a collection of boat building and other "handy" fabrication efforts. He has built a Bolger Sneakeasy, a Diablo, several other boats, and converted an Briggs and Stratton Etek motor to be used as an outboard. Make sure and follow along the various updates on his outboard pages, as he tried different configurations and ran it on different boats. He provides nice performance data with charts, etc. A good resource if you are thinking of electric power.