A ramp for a pontoon boat on which a boat user can come and go from it without having to get wet. Rotatably attached to the outboard end of the ramp is a cylindrical float which not only keeps the ramp and user afloat but also acts like a roller enabling the ramp to move up on the shore during docking on a typical beach. The ramp includes a support structure attached in most cases to the underside of the boat and a platform slideably connected to the support structure. Rotatably attached to the inboard end of the platform is a rudder which can be turned approximately 90 degrees to the centerline of the ramp. When the rudder is so turned and the boat is in motion, water drag forces acting on the rudder cause the platform to be either extended or retracted relative to the support structure.