I've added some more shots of the Serenity to my website. www.k007.co.uk - click on the gallery link on the menu bar and then scroll down the gallery page to find the link for Serenity.
I've sailed the board quite a bit now and its a different experience to anything else on the market. A mix between the old Div II and racboard days with a hint of something special.
Hugh, to speed up the tacks try getting back down the board behind the fin and crank the sail in and rail the board into the wind. It flys up and through the wind, you just have to be quick on your feet to make it around the front in time.