RedactedNarrative: On March 25, 2017 at approximately 7:25p.m.,(Captain and sole person on board) was leaving the dock at the Beacon on South Pass. Once the vessel started to plane off after passing under the I-55 overpass, the vessel made a hard starboard turn ejecting Operator from the vessel. Operator swam back towards the bridge where a boater assisted Operator getting out of the water. No information from the assisting boater was obtained. The vessel continued to travel in circles striking the bridge pilings causing severe damage to the entire vessel. The vessel came to rest on the rocks just north of the pier approximately 5-7 min from the initial incident. Drugs/alcohol does not seem to be a factor at this time. Operator was in compliance with all Safety Equipment on board (4-Type II PFD, 3- Type III PFD, 1- Type IV PFD, 1- Good Fire Extinguisher). No Safety Equipment was used.  Operator stated that he had his kill switch slipped off during the ejection and stayed secured to the vessel. Operator left the vessel where it came to rest on the rocks over night. Operator returned with a second vessel the next morning(Mar 26, 2017) and freed the vessel from the rocks and towed it to the launch where Operator was able to put the vessel on the trailer. Operator towed the vessel to his residence in Ponchatoula and notified a Tangipahoa Agent. I Agent was notified of the incident at approximately 12:30 p.m. on Mar 26, 2017 and started my investigation.