Mary,
The website for the Reynolds 33 which fits your description of non-beach/non-cruising cats advertises that they have addressed the capsize problem with a mast float and shroud extenders to allow the weight of the upper hull to right the cat. Interesting, though, all the pictures of the boat on their web site don't show this mast float and it seems as if they raced it with much success, but without the float. It would be interesting to know if the builders/designers have ever tried to right the boat in the manner they describe.

These boats are very interesting in that they offer very fast performance and the ability to do non-stop distance races. They do fly hulls and therefore are suceptable to capsizing (more so than a heavier cruising cat). The issue of righting certainly needs to be addressed and may have positive implications for beach cats.