Operator and passenger offered to follow the owner in a 2nd boat back to mooring.  Operator let go on the steering wheel temporary and struck vessel #2 causing prop damage.  Both operator and passenger were ejected into the water causing operator to recieve injury.  Operator of vessel #2 rescued persons in water.  The vessel was still circling at this point.  The harbormaster was at the scene by this point and successfully tangled a tow line in prop to stop the vessel.
Plymouth                      