RedactedNarrative: Operator advised he was pulling his son on wake board.  His Wife was sitting on one of the front seats and he did not see her stand up and go outside the front gate of the pontoon.  As he was looking back at his son, his son motioned for him to stop.  When he pulled back, his wife fell of front of the Pontoon and was hit by the propeller in the buttock and back.  They made it to a location to be airlifted to a Baton Rouge Hospital.  Doctor at Hospital advised injury was serious but not life threatening.