Abstract: A boat dolly for use with a multihull boat having right and left hull portions on opposite sides of a center skeg includes a first arm that closely fits between the right hull portion and the center skeg and a second arm that closely fits between the left hull portion and the center skeg. A backplate is affixed to first ends of the first and second arms and is adapted to abut the transom of the boat when the boat is positioned on the dolly. At least one support yoke assembly depends from the first and second arms and is adapted to closely fit the exterior of the center skeg. The support yoke transfers the load of the boat from the arms to a pair of wheels rotatably mounted on the support yoke assembly. The wheels provide mobility to the dolly. Preferably, the arms, backplate and support yoke assembly are of unitary construction and made of a nonporous plastic material. Also, preferably the first and second arms are hollow.