BC,

I've seen a few 'toons on the Cowlitz, and I would think you could fish it just fine. I wouldn't expect problems associated with anchoring to be any different than in most rivers. Any time you drop the hook in fast water, you're taking a risk that you may not get it back.

As for navigation, no problem. I've floated the Cowlitz in my canoe and small raft - smaller than most pontoon craft - but I usually take my sled so I don't have to deal with a vehicle shuttle.

Sincerely,

Salmo g.