After all I think that the effect of hull shape and T foils on performance are overestimated.
If T foils would be a game changer, Stealths would dominate all F16 events, but my impression is the current F16 design a quite comparable in perfomance.
Same for hull shapes. On the last A worlds many different hull design philosophy were present from Marstrom to LR2. Taking into account that the best sailors have in general the newest material, I would conclude that no particular hull shape is a must to win. The vintage style Tornado hulls are another example.

Performance is one factor (water line length, Sears volume distribution and low pitching motion are the key factors), however most F16 sailors are recreational racers, more for fun than the ultimate racing boat (at least my impression). A low free-board (the distance from the water plane to the trampoline, don't know the english word) should not be forgotten: How easy is the boat to right and how easy is it to come back on board depends on that. This is important for smaller and lighter persons. Unfortunately designer consider the standard US or European man. My wife had problems to come on board a Tiger, because the hulls are to high. And to be honest I and many friends need more than one attempt to come back on larger cats like Ts or F18s. A wave slapping against the rear beam or the tramp at 5 Bft costs me how many seconds? Is my week end fun reduced because of it? Certainly not.

Cheers,

Klaus