Love love love the Katalyst H2 as a kids boat!
It looks super easy to rig, potentially cheap components that won't make parents cry when the kids break stuff. Used windsurfer masts are usually easy to come by, though even aluminum poles (partially?) filled with Great Stuff could be made to work (cheap and stiff and float!) Enough buoyancy that a parent could take it out when it's blowing hard and have a good romp.

Smaller kids or heavier airs could be compensated for with a smaller sail, though these bendy masts and powerful downhauls seem to make depowering a viable option.

Do we really want dagger boards on a kids trainer boat? Isn't the F14 supposed to be the real performance race machine and this is just to get them acclimated to cats until they weigh enough to move up?

How much do these cost?