Is a windsurfer able to go faster than 40 mph ?

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I spent years doing this when I was younger. I had a 95 liter board and used 6.5's with the trailing edge a little loose for gust of wind. We believed we where near 30mph. This video he is moving. On lakes it was not nice and smooth water like this. Gusts are much less in open water like this. Would be very cool to shoot this. Nice work. Well done.

-C