Originally Posted by mitiempo
Fin keel or full keel, a boat doesn't have to be fat
There are two reasons to be fat. First is to get more interior room. Second is to create more righting moment. It is the easiest way to get righting moment. And of course more stiffness.
However fat hulls make for poor handling in rough water without significant keel mass. And therein lies their downfall as a substitute for a full keel boat.