Unit 1 was approaching a no wake zone and was at a low rate of speed. Unit 2 was behind him going at a faster speed with the bow of the boat being higher and not on plane.  

Unit 2 was trying to slow down and thought he was in neutral but realized he was getting closer to Unit 1.  Unit 2 put his boat in reverse but the motor was not running and the bow of the boat came down on the motor of Unit 1 and onto the back port side of Unit 1 causing a dent.  

Unit 2 was able to get back to the landing by trolling motor because his regular motor would no longer work.
Lake Bowen