I was intrigued by the video that appeared here a while ago. In Turkey, a boater had a portable drill, chucked a long shaft into it, and added a small propeller to power his rowing dinghy—and it worked very well. Even though I continually watch the skies for bad weather, I still got caught in a "cell", which tore my racing sail, and bent my mast beyond 90°. From a ½-mile out, just another two minutes would have had me in the lee of protection. Since I've accumulated two small propellers, I'm considering running a small hollow shaft diagonally through one side of the transom, and trimming the (mounted) propeller so it's not dragging. One of my spare propellers is off a 4-HP outboard, and the other is a spare impeller for an "Ice-Eater". (Too big or too small?) 'Course, in my state, that'll add $10 to the annual registration fee! Hmmm...maybe.... Anyone considering such a "permanent" device?