This accident makes no sense to me.
Good weather and wind conditions, highly experienced pilot, video seems to show the aircraft safely airborne with reasonable terrain clearance over the ridge line.
Yet the crash scene seems to indicate some sort of uncontrolled flight into the water.
Why would the pilot choose to fly to Cowan Ck after, apparently, getting airborne in the safe, wide, waterway at Cottage Point for a southbound flight?
There simply has to be more to this - major mechanical failure, pilot incapacitation, bird strike, cabin fire, controls obstructed by right seat pax etc. And yes, I have enough Beaver float time to know the primary flight control arrangement.