Which sail to select? What is the target speed? How to accurately
measure the polar curves to make the most out of routing software?

As every skipper, I was asking myself those questions. So I wrote a
software to do all those measurements, and that was succesfull enough
to help me win the solo Transat 2001 (France - Brasil). I now
commercialize the software and it will be soon possible to buy it
online. Have a look at: http://www.aquilon-performance.com or drop me
an email for more informations.
cheers,
Olivier Desport