Operator of vessel 1 had borrowed personal watercraft from neighbor of watercraft owner, and was following friend on second personal water craft.  First jet ski passed between vertical black and while danger/hazaard bouy and shore line of exposed rocks.  Boater in un-involved boat, witnessed second jet ski attempt to ride at about 30 to 40 mph through same path.  second jet ski struck exposed rock.  operator of vessel ejected landed in water, only sustained minor scratch to right foot. Operator of vessel 1 was charged with operating watercraft under influence of alcohol and operatering watercraft to endanger.
Raymond                       