Not being much of a duck hunter, I just don't know. I know Ankeny Preserve is just south of Salem. Don't know mif you can hun t Adair or not. Hunting on Sauvies Island but I think you need reservation's there and it's west of Portland a ways. There's another preserve by Rickreall but I don't know what the deal is there.
Seem's when I was a kid a buddy of mine used to float The Luckiamute from Helmic Park and shoot ducks. Good luck.
I have a system I use in Whitetail hunting during the rut that seems to work for me. When I make a mock scrape in the area I wish to hunt I will place a couple of 35mm
film canisters (film removed of course) in the scrape after I have cleared out all leaves and other debris. The film canisters are filled with cotton balls and saturated with doe in heat urine. This keeps the urine from soaking in the ground and can be refreshed on each trip if needed. I will also use the tarsal gland of the buck...