Originally Posted by boatsail
(... ) If I were to draw a vertical line (...)
Why not fool around some and actually do it!
For the eye may mislead one. Better measure and calculate than make visual/imaginary guesses.
One thing is that given different sections, actual resistance / drag / lift
may actually work in different way resulting in the boat with visually (and geometrically) 'more aft' center ending up with its center of hydrodynamic support 'less aft'.
Another thing is that where the center is relative to fore and aft, is possibly of less importance than how it is related to the center of SA (or better yet: center of aerodynamic force.)
So to say, this 'bow blown off' has little to do with why they actually perform better/worse upwind.