In my last try to draw a decent hull, after draw the curves of the profiles, I rebuild them with the same number of control points.

Then, I made a loft with all of them, with "loose" option. I tried to avoid this option, but there was any area very taut.

In other cases, when the transitions of the profiles are sharp, I draw curves between them (or I copy and move the control points) in order to made the transition of the surfaces lighter.

My laptop was broken, and now I use MoI in the laptop of my wife. Later, I'll upload my last hull. ;-)