Officials have blamed the R&B star's 'inexperience' and 'inattention' for the near-fatal accident during May's Memorial Day Weekend, according to a newly-released police report compiled after a three-month investigation.
The document - obtained by TMZ.com - includes photos of Kingston's arm and chin imprints on the cement wall and states that he lost control of the watercraft after simultaneously releasing the throttle and turning the steering wheel.
Authorities have slapped him with a fine and cited him for 'careless operation in an accident'.
Kingston underwent three life-saving surgeries and spent a month in hospital after he was knocked unconscious in the smash.