RedactedNarrative: On 5/26/2019 operator was operating his 31 foot formula vessel bearing wi/federal documented number 7562gw/1171719 on the waters of lake geneva. Approximately around  10:18 p.m. operator struck a pier that belonged to the residence. The boat was heading east towards buttons bay. The boat struck the pier on the starboards side breaking off dock posts and ruining the decking of the dock and shifting the whole pier to the south and making the pier lean. There was also damage to the post holding up the canopy to the boat lift. After hitting the pier the 31 foot formula vessel then continued heading east hitting a swim raft just east of the dock that was struck. There was an eye bolt on the swim raft that had the white paint scuffed off with blue paint markings from the boat which is were the damage on the port side of the vessel came from. Approximately 5 feet from the swim raft is where the stern drive of the 31 foot formula vessel was located laying on the bottom of the lake bed. This was the starboard side stern drive of the boat which was ripped off during the accident. After the boat hit both the pier and swim raft the boat stopped and had to be turned back on. It was at that point the formula vessel operated by the operator started heading back west towards the abbey harbor marina. Operator made it back to the abbey harbor marina on one engine moored the vessel up and left. All personal on the boat were accounted for and no injuries were reported to law enforcement.