I,m not sure what the area is called but it is just above the gravel bar about a 1/2 mile. Just below the bar that you can get to thur the quarry. It's the only place along there where the road on the west side of the river comes close to the road and its a deep looking salmon hole. The only thing I figure is he lost it in the tailout there and floated into the big log jam just below. The boat ended up abput 200 yds down from that on a root wad.

Sorry I don't know the names but I only go there a couple times a year.I hope this helps.