Once upon a time as I was sailing my Holiday 30 (Dutch built, fin keel, wood sloop) from Nuku Hiva to Tahiti, I looked back and saw my wood rudder pop to the surface! A funny reaction was my immediate disconnect of the tiller so I could put it over to reverse course and pick up the blade. Of course, the boat did not respond! So, what to do? I had no spare rudder, but had always considered the spin pole astern tactic. However, I did have an Aries servo-pendulum wind vane. So all I did was disconect the steering lines from the tiller and lead them to the spinnaker winches, centering the servo rudder. Now, when the vane was moved, it turned the servo blade as designed. However, since the blade was now unable to move from side to side (fixed by the steering lines at the winches) it acted as a rudder and steered the boat. So I could steer the boat by manually flopping the wind vane. But wait! I quickly discovered that it self-steered by lining the vane up with the wind in the "normal" manner. The pendulum blade steered the boat directly instead of developing tiller power in the usual mode. And off we went on to Tahiti! Even self steered thru a minor gale.
This was only possible because of the immense strength of the Mk 2 Aries and the fact that the rig was secured to the deck, rather than the transom, making the connection less stressful to the boat. I'm sure my current wind vane, a French Atoms would not be strong enuf. I don't think the San Francisco stainless clone of the Aries would be strong enuf either, altho I would not hesitate to try in the event of rudder failure.
Just thought I'd pass this on, for what it's worth.
This was only possible because of the immense strength of the Mk 2 Aries and the fact that the rig was secured to the deck, rather than the transom, making the connection less stressful to the boat. I'm sure my current wind vane, a French Atoms would not be strong enuf. I don't think the San Francisco stainless clone of the Aries would be strong enuf either, altho I would not hesitate to try in the event of rudder failure.
Just thought I'd pass this on, for what it's worth.