Hi Gary,
Your hydrofoil sounds like an insanely cool ton of fun!
I have seen boats like that run and they are by far the quickest turning, fastest, balls out cool fun ever built; land, sea, or air.
I'll bet even an F1 driver's eyeballs would smash into the side of his head from the cornering forces your boat can generate. I can only imagine going upside down in one of those ain't much fun.
My hat's off to you. You are absoultley correct about weight placement in a high performance vehicle. When I was much younger, thinner, and less intelligent I use to road race motorcycles. Simply sitting 1 inch farther back on the seat would have a moderate to drastic effect on handling and braking. I would adjust my seating position to counter-act fuel consumption during a race. The lighter the vehicle the more drastic even the smallest weight shift can be.
I think why we haven't heard of any serious concerns in the Cobra community about weight movement is because very few drivers tax their cars to the limits of the car's ability. Those who do, or those who can afford an all aluminum powerplant usually have the sense to modify the chassis to take advantage of the lighter weight. Thanks for your kind words about my ride and I'll post more photos of the engine and car as work progresses.
--Mike