Aero 9

From a design perspective in displacement mode one might design a boat to float to its lines at the design displacement with the transom just kissing the water ... though something so conventional might not have limited Jo Richards ... so with such a light boat it is probably fair to say that a heavy person is going to sink the transom or will have to sit further forward, and so the boat won’t be sailing at its optimum.

Originally posted by Sam.Spoons Weight carrying is more a function of hull form than sail area IMO, adult sailors mostly fall in the  65-105 kg weight range but that's a large variance and a hull that works well for a 65kg lightweight is never going to work well for a 105kg big guy, and vice versa. To me the Aero looks like a lightweights boat so the big sail can't sufficiently compensate for the extra 40kg of displacement much in the same way that a Phantom is going to be an unwieldy beast for a 65kg sailor even if carrying a much smaller sail than the standard rig.   Perhaps if any of our yacht designing contributors are reading they could chip in and point out the flaws in my reasoning?

From the few I've seen, the 9s look really hard work above a 3

The Aero hull is too light for it to carry a large person. The weight of the sailor is too big a proportion of the whole package. Overpowering it isnt going to help.

Weight carrying is more a function of hull form than sail area IMO, adult sailors mostly fall in the  65-105 kg weight range but that's a large variance and a hull that works well for a 65kg lightweight is never going to work well for a 105kg big guy, and vice versa. To me the Aero looks like a lightweights boat so the big sail can't sufficiently compensate for the extra 40kg of displacement much in the same way that a Phantom is going to be an unwieldy beast for a 65kg sailor even if carrying a much smaller sail than the standard rig.