Join Date: Aug 2006
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If it ain't broke, don't fix it.
FWIW, foss foam rudders are very common and foss recommends you paint the rudder white or cover it with something white to keep it out of the sun to prevent overheating. If yours is solid glass I don't think it's an issue.
I see loads of foss foam rudders painted dark color and not covered so I don't know how big a deal it really is