RedactedNarrative: Vessel #1 was on Thunderbird Lake south of the Twin Bridges area traveling in a northerly direction towing victim #1. When vessel #1 made a starboard turn to the east causing victim #1 to slingshot out so that victim #1 could not negotiate the wake created by vessel #1 which lead victim #1 to fall down and dislocate his shoulder. AOI was 0.25 miles south west of the intersection of Mohawk Rd. & Alameda Dr. (RP#1), 1.0 miles north north east of the intersection of 84th Ave NE & Alameda Dr. (RP#2), and 1.0 miles north of the intersection of E Boyd St. & 96th Ave St (RP#3). Victim #1 was transported to Norman Regional ER by EMSTAT where I made contact with the parties involved.