Is there any proof the daggerboard is "more efficient" or any better than the current racing board? It looks like it would perform worse than current. Too thin and less surface area than current. And if the first one was tested in November - see the rather funny pic from the AeroSouth website below - there probably wasn't time to perform much legitimate testing before this company started selling them.
Its not the ridder, but caused by the hard sheating. The keel should be 5cm back, maybe. But its an old and destructed onedesign. With the Snipe, its the same story. The keel pressure should be more aft. Someone presented a solution, cutting og som leading masse, but the board rejected the paper. The way to sail fast is to sheet in hard. A bigger compensating rudder would do the trick. But then its no onedesign.