Wood ducks can most certainly be decoyed and will do so quite easily, but you have to be in habitat they use.
For instance, if you are hunting a coastal river, bounded by impoundments, you aren't going to decoy the wood ducks you see crossing over the river. It's just not going to happen. They are going to the impoundments.
But if you are hunting a cypress swamp, branch, pond, etc, used by wood ducks, you can decoy them as easily as any other duck.
A few wood duck decoys in good site and the right calling will bring them in.
Forget the "hoo-eeeek" call that you hear others doing. Hen wood ducks do that when they are flying off, NOT when they are coming in or loafing on the water.
Find some, and take the time to watch them come in. Listen and pay attention to the calls they use to bring others in.
Clucks, shrieks, rolls, all will bring them in.
The "hoo-eeek" you hear bubbas do, are the reason bubbas never decoy wood ducks.
teal and tailing reds make life worth living