RedactedNarrative: Unit 2 was preparing to trailer the vessel and was in the process of hooking it to the trailer.  Unit 1 was docking immediately behind Unit 2 when the operator of Unit 1 inadvertently pushed the throttle forward.  Unit 1 ran into and ramped on top of Unit 2 before the operator was able to put the engine in neutral and allow the vessel to slide back down off of Unit 2.  There was significant damage to Unit 2 and mainly cosmetic damage to Unit 1 but no injuries on either vessel.