RedactedNarrative: Operator stated they slowed down for no wake zone, the vessel drifted under the Hwy 603 bridge and the tension on the tube was lost.  The tube drifted on other side of the piling pulling the tuber into the piling.  The tuber received contusions and lacerations to the left shoulder and left side of the body.  Person was treated and released form Hancock medical center.  No other injuries or damage was reported.