I have an O'Day 19, and have used different solutions over the years. I use my 19 on a small lake, and the propulsion is simply to get me back to my dock when the wind dies completely. 2 and 3 hp outboards have been used, but seldom needed. Last year I went electric with a 55 lb thrust electric. The furthest I'd have to go is about 1.5 miles, and my single 12 volt deep cycle battery can handle that. If I were caught in squall, and needed to get back to the dock, the trolling motor would be insufficient, though either of the outboards would have worked fine. Again because I'm primarily looking at getting home when becalmed, and only a short distance, I'm considering a yuloh and may build one for next season.