RedactedNarrative: Witness states that operator of vessel 1 accidently hit the throttle forward while attempting to "parallel park" a rental pontoon boat. The vessel struck the dock with force causing his wife to fall off the front of the vessel striking the concrete pier hitting her right hip and back. She the n slid into the water and was not able to get out on her own. Bemus rescue called to the scene to package and transport to UPMC.