One way of doing this is to remove the hydrofoil and min board tip distance rule and require that the centerboards and rudders must be straight and enter and exit the hulls through the centerline and that they are flush with the hull when they are fully retracted.

I guess that solid wings should be stopped also by require a min soft sail area or something like that.

I'm not sure how we should handle the case if someone shows up with a kite on their A-class.....

Or it's maybe time to try to find a single handed one design class, that is light, fast and has big turnout at the regattas. Any suggestions?

/hakan