Actually I think that there is a lot of comonality between the Infusion and the A-cat shown in the pictures here. Don't focus on scaling number, but on the principle:
* Having the volume in the bow low (inverted V), the "wave piercer" principle
* Reduced bow volume AND reduce stern volume, which leads to a pronounced rocker and a volume concentration around the front beam. I think that this is quite important to lift the bow for the downwind leg.


Some other comments:

you can't cut the upper part of the bow of an F18 or F16, because you want to attache the spi pole bridles

Bimare builds A-cats, F18Ht and F18, and apply the leasons learnt form the A (and the F18HT).

Agreed that you need different scaling factors for different dimensions, but I would still say that a Javelin 16 or X16 resembles the A-cats of their time.

I would prefer if the hulls are shaped to prevent nose diving instead of having a good recovery. Once the bows are under, you are slow even and you have to pick up speed again.

Cheers,

Klaus