Thank you Bill,

I appreciate your experience based recommendation.

In addition to all of the discussion on galvanic action caused by dissimilar metals on a boat, a "hot" harbor can cause damage to any metallic underwater fitting, regardless of the meal used.Your solution address that problem.

I am not quite sure how you were able to clamp the jumper cable to the top of the rudder shaft under the tiller head fitting. Are you connecting the clamp to the rudder shaft or to the tiller head fitting beneath the tiller?

FYI, Martyr makes a removable zinc anode and a removable aluminum anode. I have never used one, but you can find them online with a search for:

Martyr CMGROUPERZ Zinc Alloy Grouper Hanging Anode Zinc


Regards,

Scott