RedactedNarrative: Unit 1 was heading South in Mackay Creek and struck a large wake, causing the vessel to turn sharply to starboard. This ejected the operator and passenger off the port side of the vessel. The operator of Unit 1 was not using the engine cut off device and Unit 1 continued under power, circling hard to starboard. The unmanned vessel continued circling until it struck the bridge pilings of the K Bowers Bridge. The vessel continued circling on the north side of the bridge where it eventually reduced speed and was secured by DNR law enforcement officers.