It really depends!
Some years there's LOTS of waterfowl gear...boats, call makers and/or their reps, hunting dog people/clubs/products.
And some years there's not that much! :depressed:
Just probably G.I. Joe's, Fisherman's, some from up I-5, and you could find most of their "duck hunting" products in their store everyday!
There will probably be "some" stuff.
Of course the BEST place to see waterfowl hunting gear locally is at the Ore. Waterfowl Festival in St. Helens in mid-June!
It usually looks something like this!
http://community.webshots.com/album/77918505CNdwnm