I have seen on several sailboat forums talking about powering a swing keel by an electric winch. Well I have done it. I bought an electric 12v winch and two limit switches and put them together. It works well on my Helsen 22' swing keel sailboat. I have put the system on Youtube if you want to see it work. Just type in Helsen automatic keel, and you should get there. If that doesn't work, type in search, omiateeful. Thanks Bob.