RedactedNarrative: V-1 was traveling southeast from crossroads in the direction of the st lucie inlet. The operator (Operator1) of v-1 advised me, he was looking out for the port side of his vessel in attempt to locate the last red marker #12. Operator1 did not realize he had already passed marker #12 and was several feet south of the green marker #9. Once Operator1 realized how far south out of the channel he was, he turned the vessel hard to port. When the vessel started to turn, it ran aground on a rocky bottom. During impact with the rocky bottom it caused the vessel to come to an abrupt stop ejecting both Operator1 and his wife, also causing the vessel to capsize. After being ejected from the vessel, Operator1 and his wife held onto the capsized vessel for about 15 minutes until the vessel started crashing against the rocks at the south jetty. Operator1 and his wife advised it was not safe to hold onto the vessel anymore and swam across the inlet at slack tide. After reaching the beach on the north side of the inlet,Operator1 and his wife walked to their residence approx 15 miles away. Operator1 advised he never contacted law enforcement because he has no insurance on the vessel and he thought it was going to sink. The vessel was located still capsized at the stuart sandbar by two fisherman who called in the crash. Contact was made with both operator and his wife at their residence, where they both advised they wanted no medical attention treatment. Operator1 contacted tow boat us after learning his vessel did not sink and was at the stuart sandbar still capsized. Operator1 met tow boat us at the sandbar and they flipped the vessel upright. Tow boat us towed the vessel to sandsprit park boat ramp. Operator1 loaded the vessel on a trailer and transported the vessel to his residence, no futher information.