A folding platform for mounting to an outer surface of a watercraft includes a platform, a hinge base attached to the outer surface of the watercraft, and a hinge arm pivotally coupled to both the hinge base and the platform. The hinge arm operates to position the platform in a deployed position and a stowed position. A top side of the platform in the deployed position faces away from the outer surface of the watercraft in the stowed position. Where the outer surface of the watercraft is curved, one of a plurality of hinge bases may be pivotally attached to the surface, such that a corresponding plurality of hinge arms move in substantially parallel planes. The hinge arm may be adjustably coupled to the platform such that the position of the hinge arm is capable of being adjusted along the axis of rotation of the pivotal coupling of the hinge arm to the platform.