: >From the figures quoted the payback period sounds like at
: least 2 years and may be rather more, depending on wear and
: tear on the sail.
:
I would expect that it would be much more than 2 years.  Number of days at
sea, wind direction, relative wind strength - double or maybe triple that
figure.  The life of that sail in that environment would be too long either,
I suspect.  Can you say "Big sea anchor"?

Fun project though.

Regards,

Gordon Williams

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