As I recollect, Div 3 had two of them. I saw them at two regattas back in 2003 or so. At one regatta they started them in the open division. The kids started each race (and made a nuisance of themselves IMHO) but never finished a race. At the other regatta the boats stayed on the trailers.

I don't have kids and don't understand them, but I think things might have gone better if they had more other kids to sail with rather than grownups.

We lose more grownup sailors due to their being too busy carting their kids around to various sporting events than to any other cause. If sailing became as cool as little league or soccer then we'd gain both the kids and their parents back. But that seems to be a very big if.