Operator was operating the PWC with passenger on back.  they were near the center of the lake.  Operator was executing a number of high-speed burns and "donuts". Passenger was thrown from the PWC into the water.  The operator was unaware that passenger was in the water and continued her maneuvres, colliding with passenger and stirking her in the head with the PWC. After going to shore, both operator and passenger were okay and resumed normal activity, but on mother's advice passenger went to hospital Emergency Room for head injury where she was treated and released.
Jefferson Township            