UNIT 1 WITH 2 PASSENGERS WERE TRAVELING AND STRUCK A DOCK ON THE NORTH WEST CORNER. FATHER AND 5 YEAR OLD SON WERE ON A JET SKI WITH THE FATHER DRIVING AND SON SITTING IN FRONT OF HIM. JUMPING WAKES TOO CLOSE TO BOAT AND DOCK CAUSING COLLISION WITH DOCK DUE TO SPEED AND INATTENTION.The Collision with the dock caused the operator and passenger to be thrown into the water. The passenger sustained a head injury and the operator sustained scrapes to the knee.