Abstract: Generally, different boats are needed for pulling waterskiers, sailing, fishing and camping. The reason for this is that a boat which would efficiently operate for all of these purposes, and which was sufficiently small to be trailerable, has not been available. Herein, a boat structure (10) is disclosed having a central hull (12) which is of a width (W) at the waterline (26) when floating at rest. A pair of side hulls (32,34) have infacing sides (36,38) which are equally spaced a distance which is from about two-thirds to about four-thirds of the width (W), from the plane (24). Bottom portions (44,46) of the side hulls (32,34) are spaced above a lowermost portion (14) of the central hull (12) and are positioned below the water line (26) when the hull (12) is at rest.