Adults can also fit into and sail optis and sabots, but that doesn't make it a good idea.

When the tornado was dropped from the Olympics one of the major discussion topics was development of a pathway into performance catamaran sailing starting with the kids. While there are a number of small cat classes around (arrows, arafuras, paper tigers), few were deemed suitable for kids only as a development class; too heavy, too much sail area, too complicated, too many adults already sailing them, too ugly.

The F12 can fit this niche very well, if the market desires.