A.R.S. § 5-343: Speed restrictions; excessive wake

No person shall operate a watercraft in excess of the posted limit or at a speed greater than is reasonable and prudent under the conditions and having regard to the actual and potential hazards then existing. In every event, speed shall be so controlled as may be necessary to avoid colliding with any person or other watercraft, swamping other watercraft or otherwise endangering the lives or property of other persons.