To quote Pieterjanned28: >normal FLYER mk2 (Egner) with normal canted boards are faster then on my old boat with the curved boards. Now we get to the point of the matter!

In Europe, apparently "Normal canted boards" are canted in. So I believe that is what he it talking about. In the US, existing A-cats have obsolete vertical trunks or trunks & hulls canted out like my Italian-built 2005 XJ. We have not seen many of these canted-in boats, except on Glenn Ashby's import with which he won the Worlds. I was there, and he was very effective downwind: No bugs on him upwind either.