A few words about boat weight and performance. There are light boats, and there are heavy boats, but somewhere in between is the ideal weight. Go out on some late model boats and you'll get a good idea of what a light boat is all about. Some of these are pretty awful. You can take it from there.
Light boats have very rapid reaction times to the effect of waves, which can be rather unpleasant.
Very heavy boats, of course, don't perform as well in terms of speed, and prior to Jack Hargraves redesign of the Hatteras line, most of their boats were simply too heavy to yield the kind of speeds people demand these days. In a Hatteras, most of that weight is in the structure, so that when you go to sea in one, there is no doubt in your mind that you are on one very solid boat. Crashing into a head sea, you can feel that it is the boat, not the waves, that are winning the battle, hard as it may be. The ideal weight of a boat is the highest weight that can be achieved without undue sacrifice of performance. The heavier the boat, the less it is influenced by wave action.