Hi Bud, First you have to define what you mean by self steering.............. Hands off, so you can go below to get a sandwich or a beer, or.............. Hands off for 20 NM? Two totally different requirements. In the former case, I make do by locking the tiller in place using a Forespar Tiller Extender, or an even simpler method: a line from tiller to one cockpit coaming; and a bungee cord to the other side. This holds the tiller in place, and allows minute corrections, and holds course - after a fashion, but is subject to your weight shifting around - is very simple to make and does an adequate job. For long distance course holding, your next choice is; Sheet to tiller steering which works very well reaching (using the jib sheet as a signal input) Hard on the wind, you will need a signal input from the main sheet - but I haven't played with this on an M15. Naturally these sheet to tiller systems only work when you have wind. No wind, - no self steering. So, if you envision course holding both with and without wind; and getting home in a flat calm under power, then you have to go Autohelm, or some such electrical system. On my old 29' boat, I played with them all: first sheet to tiller steering; then built a wind vane steering system; but finally, because of 26 NM trips back home on Sunday afternoons in a flat calm, the final answer was an Autohelm. But then, with our engine running, power for the autopilot was not a problem. So, you first have to define how you want to use it. That determines the range of possible solutions. Connie M15 #400