RedactedNarrative: Unit 1 was floating East through Wappoo Creek near Riverland Terrace Boat landing. Unit 1 was adjusting the auto pilot settings on the boat when an unknown boat passed by creating a large wake. The boat wake cause Unit 1 to rock to the side and the subject on board fell over. The subject was not wearing his kill switch lanyard. Unit 1 continued to move in circles hitting and breaking a concrete piling. Unit 1 continued to circle around and hit a concrete piling supporting a power line. The boat continued to circle until it ran aground in the marsh.