AC45s & AHPC Viper: Airborne Lfoils

Photo above: www.xssailing.com  As some noticed already the AC45s are testing Lfoils at SF, and it seems in parallel AHPC is doing the same with the Viper. They are saying 25knots on 20knots of wind.That is quite impressive as when wind comes up, drag rises exponentially and speeding above true wind is harder to achieve than in medium range.
Check video below… so what we do with curved foils now? well I can tell you that if some will know the answer soon will be Darren Bundock and the Oracle team as no one can match their resources right now.