Well here's the thing...if the purpose of the curved daggers is "Lift", wouldn't it be better, lift wise, to sail the boat 'flatter' with both (curved, lifting) boards full down? ie. try to foil it up wind on two boards (hulls), vs. one board, on one hull only?

Of course if you did sail it flat and up in the air on two boards, I'm guessing you'd also have a lot of side slip, and since getting upwind to A mark is the priority, over outright speed, I guess you'd want to sail it on one hull upwind.