The theme is very interesting because no longer adressed at such by the market, the current trend being at first the search of reaching/downwind speed in the planing mode combined with more beam for more accomodation. The promotion videos no longer showed the boat upwind on waves but downwind with a huge asymetric spi on a telesopic bowsprit, although the average sailor in coastal waters should do twice more hours of upwind than of downwind. Not to mention that some old school sailors prefers the feeling of a fine sailing upwind than a rush fast and furious downwind.
In line with the previous comments, we need more specifications and constraints (like mass units per m2 for the building of the hull, of the deck, % of mass dedicated to accomodation, etc…). The degree of freedom for the design (like length, beam, sail area, ballast ratio) should be in dependence to each other through such spec. and constraints. For example, if you put more kg in the length, you should put less kg in the beam or in the ballast. Then, in such defined context, we can effectively discussed of the hull shape itself, in relation with the need of power (the RM at heel), the wetted surface, the balance and the waterlines streamlining of the heeled hull, moments of inertia (of mass, of waterplane aera) in relation with pitching and for the bow part, the ability to cope with waves.
