I'd do some serious scouting ahead of time.
Do you have a dog? If no, and you set up in poot mud, forget about wading to go fetch a bird.
The wind dictates your location, make sure you have a good area for both north and south winds. My best sites are not obvious "ducky" type places, I get more results setting up behind spoil islands than in the back lakes. Not the normal looking places.
And I've learned the bigger the spread the better, I generally put out 100 dekes.