The worst they can say is no
They might be a little small but you could throw some paint on them and give them a whirl, or if you have access to some scrap wood, plywood or luan you could make some sleds. Do a google search for homemade sea duck decoys, sure it will reveal something. Also check craiglist, people always trying to dump old flambeau's. A little black and white paint and you're in business.
Good luck, safe boating.