What happened
The FAA’s narrative, in sentence case. The FAA writes it in capitals and removes private details.
(-23) Returning from a hunting trip the pilot checked the weather and NOTAMS for the airport, noting a local NOTAM for "braking action nil". This NOTAM had been in place for most of the winter because the airport did not sand the runway. When the pilot departed earlier in the day the runway condition was good, temperature was below freezing and there was a light dusting of snow on the runway. While away from Soldotna the pilot changed the configuration of the skis on the aircraft to reduce the drag from the penetration of the wheels into the snow so he could safely operate from a frozen lake. On return to Soldotna the temperature was above freezing and runway conditions had deteriorated. On landing as the aircraft slowed directional control was lost when the rudder became ineffective this is due in part to the slippery surface and the ski configuration of the aircraft.
As the FAA filed it
(-23) RETURNING FROM A HUNTING TRIP THE PILOT CHECKED THE WEATHER AND NOTAMS FOR THE AIRPORT, NOTING A LOCAL NOTAM FOR "BRAKING ACTION NIL". THIS NOTAM HAD BEEN IN PLACE FOR MOST OF THE WINTER BECAUSE THE AIRPORT DID NOT SAND THE RUNWAY. WHEN THE PILOT DEPARTED EARLIER IN THE DAY THE RUNWAY CONDITION WAS GOOD, TEMPERATURE WAS BELOW FREEZING AND THERE WAS A LIGHT DUSTING OF SNOW ON THE RUNWAY. WHILE AWAY FROM SOLDOTNA THE PILOT CHANGED THE CONFIGURATION OF THE SKIS ON THE AIRCRAFT TO REDUCE THE DRAG FROM THE PENETRATION OF THE WHEELS INTO THE SNOW SO HE COULD SAFELY OPERATE FROM A FROZEN LAKE. ON RETURN TO SOLDOTNA THE TEMPERATURE WAS ABOVE FREEZING AND RUNWAY CONDITIONS HAD DETERIORATED. ON LANDING AS THE AIRCRAFT SLOWED DIRECTIONAL CONTROL WAS LOST WHEN THE RUDDER BECAME INEFFECTIVE THIS IS DUE IN PART TO THE SLIPPERY SURFACE AND THE SKI CONFIGURATION OF THE AIRCRAFT.