RedactedNarrative: Operator of boat A was attempting to drop off two tubers near shore and as he made a counter clockwise turn the tubers were supposed to fall off the tube near shore.  As the operator of boat A continued to make his turn the tubers stayed on the tube and continued with boat A.  The operator of Boat A and the observer in boat A did not see boat B coming towards shore on their starboard side and swung the female occupant of one of the tubes into boat B.  No other damage was recorded to either boat and no other injures were sustained.