The present invention is directed to apparatus for a winch assembly. The winch assembly may be secured to a towing trailer and arranged to assist in loading and unloading cargo from the trailer. The winch assembly may include mechanisms, systems, and features to make the winch assembly easy to assemble and use, increase the service life of the winch assembly, and improve the consistency of the performance of the winch assembly. Embodiments of a winch assembly disclosed include novel drive systems, novel ratchet and pawl systems, novel systems for guiding a winch strap, novel systems for securing the winch assembly to a towing trailer, and a novel frame member for a winch assembly.