a boat dolly utilizes two pairs of transversely mounted wheels to allow a boat to be transported horizontally or in a vertical on edge orientation . one pair of wheels may be selectively attached to either end of the dolly . one pair of wheels are removable for transportation and storage purposes . the dolly is provided with a mounting bracket adapted to engage the outboard motor mount on a boat . the mounting bracket is adjustable , and may be adapted to cooperate with any outboard motor mount , regardless of the angle thereof . the dolly allows a single individual to transport and launch a non - trailered boat .