It is a very long way from a 11 foot Moth to a 90 foot Multicupper. Extrapolating any data or experience from the moth to a Dogzilla's is fantasy.

To give an example; the 90 ft dogzilla's will not even encounter significant form drag all the way up to 14.6 knots; a speed at which the Moth sailors will be crying with exitement. Afterall their cross-over point is already to be found at 5.1 knots.

The dogzilla's are expected to go close to 30 knots and that means a wing loading that is at least 4 times that of a 15 knot Moth. All well outside the scope of extrapolation.

If foiling was such a magic trick then the last C-class challenge would not have seen the full foiling version being amputated with a grinder.

Moths were VERY limited in the waterline length and maximal attainable power (due to limited width) and there foiling allowed for a significant jump in performance (about 20%); however in the Australian portsmouth rating they are still on a par with the Hobie 16.

Another lesson in the difference in relative performance compared to absolute performance.

Wouter