I agree with Carl that the 12 meter Spitfire is lively and lovely- and costs US$200,000. Hence my interest in retrofitting beach cats to fly.
W. Richard and other large French tris of the 1970s were heavy and when fitted with angled daggerboards, lots of stress was generated. So- jamming, leaks and breakage of the wooden foils resulted. This boat is in Ft. Pierce and the foils were sawed off years ago. Perhaps Catri shows the way.

The Rave trifoiler uses 3 inverted T-foils, each with an adjustable flap for attitude control, and lots of trailing arms, bungees and lines. Lately they changed to a joystick for each flap, suggesting a need for 4 hands.

In contrast I want to use surface piercing foils that are tapered, flying higher on a narrower foil to reduce drag and avoid flaps. The angled foil is fixed, and the righting force of the lee foil forces the rig to stay nearly horizontal. Not much heeling, as heeling force is converted into speed even in puffs.

Crashing? Yes loss of lift means crashing, but with surface piercing foils, the cat crashes horizontally, from 20 down to 12, then she lifts and you are off again accelerating to 20 in a few seconds. I have never pitchpoled in 4 years of development, even when running off downwind feeling like a speedboat: the long bows out in front keep this from happening. Even in good-sized whitecaps when it is blowing 25+, and everybody has gone home (except for the Hobie 16s)!