RedactedNarrative: On May 30, the Operator and Occupant 1 of Vessel 1 (an aluminum boat) were fishing on Ennis Lake.  The Operator stood up to urinate off the back of the vessel and when he finished, he turned around and slipped/lost his balance and fell to the port side of the vessel.  The Operator was wearing rubber hip wading boots and this made his footing in the bottom of the vessel unstable.
  
  The weather was sunny with a slight breeze.  When the Operator fell to the port side of the vessel, this caused the vessel to start taking on water.  Occupant 1 jumped to the starboard side of the vessel to try to keep it from capsizing.  The vessel capsized ejecting the Operator and Occupant 1.  Neither the Operator nor Occupant 1 were wearing life jackets although there was a Type III and a Type V life jacket available in the vessel.  Occupant 1 managed to get the Type III life jacket on and the Operator held onto a dry bag that kept him afloat.  The Type V life jacket could not be used by the Operator because it was underneath the vessel.  Occupant 1 had a waterproof cell phone and crawled on top of the capsized vessel and called 911 and Madison County Dispatch.  Another civilian vessel with two fisherman pulled both the Operator and Occupant 1 from the water and took them to shore.  The other civilian vessel also pulled the capsized vessel to shore.
  
  The Operator and Occupant 1 were transported to Madison Valley Medical Center for cold stress and released.
  
  The probable cause of the incident was inexperience of the Operator.