Tuffy,
You might want to speak to Forumla 1's Red Bull team. With a wing that big you might experience some further lift and boat performance. I cant have you going faster than my Suzzy, so you will have to submit your plans with the council and then get approval from me.
Looks good, I am a bit worried about how it may get in your way, and further more, I like boat space, so would a good investment in a great hat, wind jacket and raincoat be enough?
Marco