I got to sail Gato's DS12 last week and I think that I should post some comments about it (from 75 kg's adults point of view).

I was really surprised how well it handled my weight, conditions were really light and I was significantly faster than a small (<50 kg?) girl in Laser 4.7 directly downwind. Biggest problem in light conditions was that it took some speed to get the daggerboards work and it meant few seconds drifting sideways every time that gust came (when I wasn't moving at all), after I gained some speed pointing abilities were decent. Also the boat was really light to handle on the ground, I guess that even mom with ~12 year old kid could manage with it.

If mass production prices will be low enough and it doesn't gain lot more weight then I believe that F12 has lot of potential to be a success.

ps. Test sail got me wondering about foam-carbon (a la A-cat) DS12 weighting about 40 kg's (for adults only, the XXX edition <img src="http://www.catsailor.com/forums/images/graemlins/wink.gif" alt="" />).