I am following this thread with great interest. I measured distances using the main halyard and believe my mast is plumb. The partners and foot hold the mast centred as far as I can tell and as long as the boat, keel and rudder are symmetrical. I continue to point higher and get better performance on a starboard tack and the boat lists a couple degrees at anchor, probably because of the battery bank located sb. There are more reasons than mast plumb that a boat performs better on one tack is my point. I noted better sb performance with all combinations of water tank and holding tank levels. I have tried for over 10 years to tune a better balance but she still sails a little better on starboard tack! Len Mitchell Crazy Legs 1989 37+ Midland On
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