Two years running... two bucks doubled-lunged both the result of a decoy. My decoy is a 3D target miniature with removable antlers, but it does the trick very well.
Last year's success, morning of Nov 7th was up-wind about 20 yards facing directly or nearly directly at me. The buck came from further up-wind after I grunted at him. He began circling around to get downwind of the decoy, and he crossed into a shooting lane.
This year's success, sundown of Nov 8th, it was set up in a fence line with me about 15 yds in the woods with a perfect broadside shooting lane between me and the area 10 yds in front of the decoy. Wind was blowing into the woods from the field. The decoy was facing a thicker part of the woods at the far edge of the field, and was slightly quartering-to the stand. At sundown the deer came out of the woods into the field. When the buck saw the decoy he made a B-line to it, 150 yards covered in no time, following the fence line. As he got close, he started walking sideways, getting ready for the charge. My arrow got him exactly as I set up. He read the script!
I'm completely sold on using a buck decoy, but those hunts were early November. Later November, I'd try as a doe and flood the area with doe estrus scent. Use doe bleats too.
Maybe I'll get another decoy to use a combo set, as kjohn15 said. That sounds cool.
Good luck.