Here's a couple of my setups.
The first picture was the scene of quite a ruckus. That morning, I had 17 birds within 30 yards of me. There were so many birds around me, I couldn't draw without being seen. When I did decide to take a shot, on a particularly ornery jake, I got busted by a big gobbler that was only 10 feet behind me. I didn't know he was there, until he started making his alarm putt. It was pretty funny. There were 6 or 7 jakes and toms around me at that moment. I think the big tom caught me drawing. They all eventually moved off and out of range. I did call 4 jakes back to the decoy, but didn't take a shot. I had to end my day's hunt at noon, so I didn't get another shot.
The next day, I moved to this setup:
I ended up calling a huge gobbler in, and he put on quite the show. As soon as he saw that jake, his head turned from bright blue to almost black. He strutted and drummed and did everything he could to frighten the jake decoy off. When it didn't run, he pecked the crap out of it several times. His final move was to spur it. I shot him as he was gloating over the knocked over decoy.
I made the shot I wanted and thought he was down for good, but he made a last short, desperate flight into the nearby thicket, and I couldn't find him. That's the first big game animal I've ever lost. I'm still sick to my stomach about it. At any rate, my buddy shot two huge gobblers out of that same setup later that afternoon with his shotgun.
In both setups, I had the decoys set about 13-15 steps from me. I had the facing me and made sure not to put them too close together. Every male bird, both jakes and toms, that saw them zeroed in on that jake. These decoys were expensive, but they should last me the rest of my life. I've spent a lot more on all of the cheap ones I've used over the years.