On the rocker issue we currently believe that the less you have the faster you go but you need some lenght in the hull to achieve this, so as the Tek Kat is 23 foot giving great upwind performance plus adding more depth in the hull this gives bouyancy and and freeboard for bigger waves. On the downwind performance less weight and flat hull will alway be fast.

Currently the A Class is leading the way for hull design but they are missing the most exciting part of sailing the Aysmetic
so a mix of hull design is the way forward, Tek Kat have little rocker achieving ease in the tack plus waterline lenght for upwind performance also bouyancy and deeper stern to push it to the max downwind.