I don't think the A's are a good platform for T-foils. Their general make-up is such that gains would indeed be very limited. This also hints at the fact that other cat design, which are significantly different when compared to the A's can most definately benefit alot from application of T-foils.

For example I feel the A's are rather narrow compared to their length and mast height. Much more then other cats. They are therefor much more limited by capsizing then pitching. Wider boats like most of the non-A-class designs are much more limited in pitching the capsizing here the T-foils can be a great advantage. Probably increasingly so with decreasing hull length.

WOuter