But some things that sound complicated may actually be simpler and better choices than expected.

Before dismissing the idea, I would like to list the features of a single centreboard pivoting from the central truss:

- It needs no case, only lateral support (easy to build, access and maintain)
- It is external to the hulls and independent from them (no leaks, safer, cheaper)
- It helps right the boat (safe, fast and efficient righting pole style recovery)
- It doesn't interfere with the boom or take deck space (easy to gybe, difficult to bruise inexperienced legs).
- It is invisible both down and up (therefore not ugly).
- It is cheaper and easier to build than a board in each hull (but Phill is the one who can confirm this).


Another possible configuration change would be to replace the twin rudders with a single, deeper, daggerboard style rudder, also placed in the central frame.

Depending on project specifications, this could further reduce the price and complexity, while still yielding a fast boat compared to #2. The central structure would concentrate about everything needed to sail the boat: rudder, centreboard and mast. It would look a lot like an Optimist or Laser with two hulls. I guess this could help parents feel comfortable with the idea of a cat trainer.

What do you think?