Thanks, the basic hull design concept was a cross between a Hungy Tiger Moth, Taipan and add a fair bit of freeboard plus a dash of extra rocker (compared with a mozzie). The aim is for a good heavy weather boat, while keeping the transoms clear of the water in the light stuff...time will tell.

Yeah, it has a square top main, only different to a mozzie main from the second top batten up. I have some reasonable GPS data from the old mozzie, but it is generally in very rough conditions in which the beam was being constantly smashed by waves, enough that the big ones would throw you forward, and big ones usually came once you were back up to speed from the last one! Hence the reason for extra freeboard on this boat, dragging a bit of RHS aluminium extrusion through the water is slow in anyones language.

Upwind target speed from experiences in previous mozzie was something like 16 knots in about 18-20 knots and lots of chop. 19ish knots on a fast reach I seem to recall. Also my old mozzie was a deep V hull, not like the new rounded hulls.