Hmm, the speeds weren't very impressive today...
I don't really know, it was a nice warm day on the water and my feeling for the board was good, many very clean jibes (Alpha 18.16 missed to print it in the results page), but speeding. Maybe the wind wasn't only strong enough in the gusts.
Later the day I tried a different mast foot position than I used for absolut flatwater. It was better, the fastest run I did with this position, but then the wind died complete.

Thanks to Robert and Peter for the the information ;)
And Robert, damn you are really fast... :)