I don't mind combat hunting.... because probably the best thing in the world is to come back to the boat launch with 21 greenheads on the bow and everybody else at the launch has crap or has maybe 1-2 teal.
And they're all like"DAAAANG! Where'd you guys hunt at?"
And we're all like "Daaaang! 200 yds from you idiots."

Best feeling in the world.
After a good hunt the only thing others doing parking lot scouting will see is the hen mallard or nothing. Keep them guessing about bird numbers in the area and not ask questions so they won't follow or try to beat me the next morning. Or worse they start making their way to your exact spot to not allow birds to rest.