Let me rephrase that.

The standard version of the F12 will be for the weights given above. However for myself and others who are adult like and overweight I design a more volumious hull. This will will still be 12 feet long and everything will be the same except the volume of the hulls. The hulls will even have the same shape, but be just a little wider overall to have sufficient clearance between the beams and the water surface.

The rig should be powerful enough, afterall the laser-1 dinghy has 7.00 sq. mtr sail area too ! With a ready to sail weight of 80 kg's, which makes 160 kg with the 80 kg that an optimal skipper needs to be in the laser class. F12 will still come out at 60+80 = 140 kg with such a skipper but using the same sized mainsail with a MUCH better profile (= high aspect squaretop).

Just don't race a 50 kg kid for the car keys when you're over 80 kg yourself, that is all. Not of interest for recreational afternoon/evening sailing some adults are planning with this thing. Me included !

Wouter