It seems that everbody thinks the Stealths "T" foils are only a down wind advantage - NOT - Just to clarify things i had a chat with Jon Pierce (Stealth Designer) and this is what we came up with. Going upwind with the "T"s the boat adopts a rather "different" feeling about her, when a gust comes and the boat heels/accelerates and whereas before you had that feeling through the rudders that she was trying to "screw up" into the wind now you dont. Jon reckons that its a combination of a) by keeping the bow up you reduce the forward wetted area thus leaving the centre of effort and the centre of pressure pretty much where they were designed and b)because of the angle of inclination of the "T"s as the boat heels they operate like mini-rudders and try to keep the bows off the wind. All i know is that it just improves the overall feel of the boat.