On June 2, 2013 about 11:00 am Vessel #1 bearing Tx 8677 FF and being a 2000 Supra Launch, was being operated by the owner. Operator1 was traveling up river pulling subject on a wake board while passengers observed.  Vessel#2 bearing TX 8791 HD 1993 Malibu Echelon was traveling downriver towing two people non knee boards while three others observed. When the two knee boarders were through boarding, they were roughly 300 to 400 yards down river from Hamm creek Park.  At this point, they decided to take a break and swim with subject diving in the water. Operator2 was positioned behind the steering wheel with the motor off. V2 occupant1 was in the passenger seat and v2 occupant2 was seated in the bow.
At this time, Vessel#1 was traveling up river. There was heavy traffic around the boat ramp area so they decided to turn around. Upon turning around, and everything getting back to straight. V1 towed subject did two tricks and was outside vessel #1 on the port side thinking about what trick to do next. He observed vessel #2 ahead of them and decided not to do another trick for that would put them to close. He realized that Operator1 was not altering his path to avoid vessel #2. He began hollering and making hand gestures. Tow v1 occupants saw towed subject and looked to Operator1 to inform him. It was at this time that they struck Vessel #2
Vessel#1 struck Vessel#2 on the starboard side about 2 feet behind the driver’s seat.  It traveled across the boat exiting the port side over the passenger seat and windshield. The driver ducked down under the steering wheel. The passenger in the bow dove into the water. The passenger on the port side did not have time to react. He was drug out of vessel#2 by Vessel #1. He lost his left arm just below the elbow, had a collapsed lung and several lacerations on his face and head.
Vessel #2 sank on sight. Vessel #1 was able to recover all that was involved and limp back to Hamm Creek Park before sinking.
Operator1 stated that they were traveling at approximately 20 mph and had 1000#s of water on board.

V1 was at fault for inattention and alcohol.
Cleburne