I would butt.u.me. that the ventilators work under the same idea as the do on powerboats.... they "suck" air under the boat and then the boat is riding on bubbles and not just water...less friction. At these speeds, will be interisting to see how it works.

The foils on the rudders should control the attitude based on how they are angled... they could help or hurt you depending on their angle. They use something similar on the 14 and 18' skiffs.

Will R