We had an A-cat regatta this week end at Marstrom and guess what....a M20 with curved daggerboards! These boards have more lifting capabilities than the A-class rules allow and at 17-18 knots with the boards fully down it lifts the boat completely from the water. That is not good since it jumps out of the water quite violently and sometimes threws the crew in the water. The boards where longer than they are in the picture but then it started to do the "thing" at 16 knots. When they sail upwind with this only parts of the hull are in the water and that enough to balance the boat, so it is a kind of "semi foiling". It's hard to tell how much foiling you want to get the best performance. The boards are level with the bottom of the hull in the picture.



/hakan