I am out in Dahab, Egypt at the moment and with the light winds in the late afternoon we have been having some great sessions on the Serenity. We have been using it with a 7.8 Tushingham Lightning in a range of winds from 2knts to 15 knts. I'm really keen to get a GPS on it and see how quick it is in light winds.
It glides really smoothly over the water and once up on the rail it really feels smooth. Turning took a little bit of getting used to but felt very much like sailing on a long board i.e you have to move back down the board to get a good quick turn for a tack. It loves cruising across the wind and points really high.
We have had a range of sailors on it and all are addicted to it. You can check out a few pics and a story on my website www.k007.co.uk
I will report back as soon as we have some GPS speeds logged.