Operator1 was operating a 2007 yamaha pwc near the entrance to allen's creek.  V1 occupant was a passenger on the rear of the pwc.  Operator1 slowed her pwc down to an idle.  Operator2 was behind operator1 and V1 occupant on a 2007 yamaha pwc.  Operator2 did not see operator1 slow down and was approaching from the rear.  Operator2 turned sharply to the left to avoid a collision.  When she did this it caused the rear of her pwc to rise out of the water.  The right rear of her pwc collided with the left side of operator1's pwc.  Operator2's pwc made an arch from the lower left rear of operator1's pwc hitting V1 occupant's left calf and hip areas and continuing to the left front of the pwc. A nearby boat loaded V1 occupant into their boat and transported her to the paynetown boat ramp.  All individuals involved were wearing life preservers and the two operator's were wearing their lanyardbs
Bloomington