Always reluctant about offering advise on stuff like this cause it’s a bit confusing. If you stay mid channel/river you’ll be fine. That rock, which I’ve heard about for years, is sitting right off the float plane dock on the road side/boat launch side of the river. It’s not mid river. Let’s put it this way. If you launch your boat and head down the right side of the river heading directly at the float plane dock you’ll likely hit the rock then the dock. You don’t naturally take that route cause you’d hit the float Plane dock, but, sometimes a boat is coming up river or a float plane starts up and you look for a place to duck into. It looks like a safe spot. It’s not. Also, for clarity, I saw a rock. Who knows, maybe there are others. So do what I do. Motor up with prop barely in water on the main or use your kicker. That’s what I do. I’m just cautious.