A personal transfer device for transferring a boater from a dock to a boat moored in a boat lift adjacent the dock, and back again. A cantilevered support is secured to an upper part of the boat lift frame, the support's free end extending out over the dock at a height that does not interfere with normal use of the dock. A hoist carriage, for example a monorail trolley hoist, is movably secured on the cantilever support, and is connected to a transport chair that can be located over the dock at a convenient height for a handicapped boater to seat and/or secure himself. A controller is accessible to the boater seated in the transport chair to raise himself off the dock to a height sufficient to clear any intervening boat lift structures or frame members, and to then transport himself horizontally along the support through the boat lift structure to the boat, where he then lowers himself onto the boat using the controller.