Most new A-cats have canted hulls. That angle is calculated so the hull, rudder and centerbord is perpendicular to the water when sailed with the weather hull just above water.

The hull should be used to keep the boat afloat and not act as centerboard. If you use asymetric centerboards or canting centerboards that "tacks in the cb trunk" you can get the hull to travel straight through the water (lower drag).

Using the centerboard to lift the boat out of the water might work in some high speed conditions. But if the drag increase from the centerboard that lifts the hull is higher then the drag reduction from the hull, you loose. So far no A-cats have angled the centerboard in any extreme angle to achive this effect.

Sailing with both hulls in the water is a bad thing for boats with canted hulls.

/hakan