RedactedNarrative: There was a person operating a PWC while towing a person on a jet board. This is illegal in MA. They were heading back to shore the person seated on the PWC was operating the controls. The person on the hover board lost control and spun into a dive back towards the pwc and struck the port bow. He was injured. A written warning was given to the operator of the PWC for violation of MA Law prohibiting towing on a PWC.