Don't bother.... It's a lot like deer down there, sure, you can get lucky, but there are so many idiots that jump shoot 'em you will likely not shoot any. Lots of hunting preassure, low numbers of ducks.
You can get lucky and catch a pond with a dozen or so on it... but... it's not easy to sneak up to them for a jump shoot.
Don't even bother setting up decoys and waiting.
There are only a few local birds and lots of water. Chances of seeing them are slim.
On the kitsap peninsula... most of all the birds that stop here are either on some of the bigger lakes, like kitsap lake, or they just stay on the saltwater.
Wouldn't you if you were a duck?

Late season... LATE season you can get a few divers in some of the small lakes and ponds out in tahuya. But only because all the local preassure has practically stopped, and because there are quite a few more birds. But by then, its almost exclusively divers like scaup and ringnecks and they will keep to the very center of the ponds, pretty much out of range for a quick jump shoot.
Lived here my whole life... used to drive around there alot as a kid. Mostly unsuccessfully.
Long story short.... YES. You can kill ducks out there.

...sort of.