RedactedNarrative: UNIT 1 WAS TROLLING SOUTH ON LAKE WINNEBAGO WITH FISHING LINE OUT BEHIND THE BOAT. THE OPERATOR OF UNIT 1 WAS GOING WITH THE WIND AND WAVES USING THE TROLLING MOTOR TO STEER. UNIT 2 WAS PARTICIPATING IN A SAILBOAT RACE. UNIT 2 WAS AT THE STARTING LINE GOING IN A BACK AND FORTH PATTERN WAITING FOR THE RACE TO START. THE OPERATOR OF UNIT 1 SAW UNIT 2 PASS IN FRONT OF HIS VESSEL GOING WEST TOWARD SHORE. THE OPERATOR OF UNIT 1 SAID THAT UNIT 2 THEN TURNED BACK OVERTAKING UNIT 1 AND CUTTING IN FRONT OF HIM. THE OPERATOR OF UNIT 2 SAID THAT HE WAS IN A HOLDING PATTERN GOING EAST TO WEST WAITING FOR THE RACE TO BEGIN. WHILE GOING BACK EAST THE OPERATOR OF UNIT 2 HAD HIS BACK TO UNIT 1 IN ORDER TO STEER THE SAIL BOAT WITH THE WIND. THE OPERATOR OF UNIT 2 SAID HE BELIEVED THAT UNIT 1 WAS UNDER POWER. UNIT 1 THEN STRUCK THE LEFT OR PORT SIDE OF UNIT 2.