Thanks for your suggestions. I use a winch to haul the sail down so think I have already applied quite a bit of downhaul but I will try with more next time. In any case I know I have still room for improvement on technique.
Thanks, my pumping can also improve quite a bit. On the other hand I'm thinking...you weigh 6kgs less than me, have a wider board and a larger sail, and hence getting a larger sail could also help me.