A MAJOR objective, IMHO, would be no boards of any kind. Skegs only.

By the way, has anybody ever heard of a "shoe"? An exremely low-profile "keel" that has been used on cruising catamarans? When I say "low profile," I mean it is only a few inches deep below the bottom of a 35-foot-long boat. It has kind of a fat, upside-down-T shape. The boat we sailed pointed very well with VERY little leeway, and it tacked on a dime. Would that work on a smaller boat, too?