Texas Parks and Wildlife Code - PARKS & WILD § 31.106. Personal Watercraft

(1) unless each person riding on or towed behind the vessel is wearing a U.S. Coast Guard approved Type I, II, III, or V personal flotation device;

(2) if the vessel is equipped by the manufacturer with a lanyard type engine cutoff switch, unless such lanyard is attached to the person, clothing, or personal flotation device of the operator as appropriate for the vessel involved;

(3) during the period between sunset and sunrise;

(4) within 50 feet of any other vessel, person, stationary platform or other object, or shore, except at headway speed;

(5) if the operator is under 13 years of age unless the operator is supervised by another person who:

(6) if the personal watercraft is a motorboat, within any area prohibited for operation of a motorboat by state law or local rule or regulation;

(7) while towing water skis, an aquaplane, a surfboard, a tube, or any other similar device, unless the towing vessel is designed to carry on board a minimum of two persons;

(8) by jumping the wake of another vessel recklessly or unnecessarily close to that vessel; or

(9) in a manner that requires the operator to swerve at the last possible moment to avoid collision.