Without going into a complicated explanation, I can say no way. There is no dihedral or other inherent stability feature. The lift remains the same on both sides of the canard unles someone turns the handlebar. The boat has no tendency to "settle in" if left alone. Dihedral doesn't work as a pendulum like first intuition would indicate, but it is an aerodynamic change that produces the stability in airplane wings. I'm trying to picture it, and can't. I'll have to dig out my stability and control textbook when I get home. I know that the lower wing ends up producing more lift due to sideslip, but I think it's not completely clear in my mind anymore.

> Actually, it looks like the canard shape of the board would make
> it stable. If you had enough forward velocity, I'd bet you could ride
> with your hands off the handlebars (just like a bike). The foil shape
> of the board creates lift on both sides that would tend to cancel
> each other, and at the same time, create a righting moment if the
> boat-bike were leaned.

> Just my $0.02 FWIW