RedactedNarrative: vessel 1 ( the only vessel) is a 1980 16' hobicat catamaran.  operator stated that he, the only occupant, was sailing with the wind and turned the wrong direction.   the catamaran capsized and ended up with the mast facing downward into the lake.  a boat with 4 occupants stopped and rendered assistance to operator.    several attempts were made to right the craft, however unsuccessful.  in the last attempt to flip the vessel over, operator's  index finger on his left hand became entangled in a rope and was badly broken.   he was taken to the west boat ramp where he had launched the vessel. operator was able to drive himself to st. luke's medical center in nampa, for medical attention.  canyon county marine patrol deputies located and recovered the hobicat catamaran, and towed the vessel to the west boat ramp.  operator retrieved the vessel on 5-21-17. He completed the idaho boating accident report on 05-24-2017 and stated the he had been scheduled for surgery to repair his index finger on his left hand on 05-25-2016.