...I don't see that being the answer for getting kids sailing, although it did get me into it.
You just contradicted yourself and strengthened exactly what I said. How many of us started out by sailing some old POS that we bought for cheap? Probably most. I say, go get these ratty old hunks of junk, rehab them, make them safe, and flood the market. Some dealer would sponsor such a program with cheap parts I'm sure. Work as a fleet and offer free fleet membership as sort of a hand holding service. That would boost the popularity of cat sailing. A bunch of cheap, fun, fast boats.