RedactedNarrative: Boat was anchored from rear of boat (transom) and started taking water over the transom due to high waves. After operator realized boat was filling with water, he attempted to reverse boat to loosen anchor rope. Then operator reversed boat, the boat rolled, causing the boat to capsize. the Operator was rescued by a nearby boater. The boat then drifted into shallow waters. No injuries were reported. A life jacket was not being worn. There was damage to the boat. Alcohol was not a factor.