I don't know about decoying muleys, but I did hear a story that the DOW, in an attempt to apprehend a moose poacher, put out a moose decoy to draw in a moose and additionally draw a shot from the poachers. 10 minutes after the decoy was set, the poachers shot it.
I just do the spot and stalk thing. I did have a 3x4 come on me as I was hunting another buck. I sprayed my feet with doe in heat and didnt think anything about it and just noticed the other coming up my trail and he was 10 yds from me with his head down. Scared the crap out of me and him when he seen me turn. LOL but other than that that is all I have tried and used.
After firestorm of 91 the muleys started coming in droves. I could usualy get well within 100 yards of most any of them but what I found out to be the best decoy was my 99 Dodge deisel truck. I could drive within 10 yards of them and even stop the truck and get out as long as I didn't seperate myself from the truck.
That would be very interesting if a decoy would work. Maybe I will try that during muzzleloader season, I'm usually not to worried about getting close enough to deer with my rifle out here in open sandhills but on the rivers where there is a little more cover to hide, it might work well to get a really close shot on a big old boy in the late rut.
Let me start off by saying that I am a scaredy cat.
For someone that spent 3 years in 82nd Airborne jumping out of all manner of military aircraft, my friends find this ludicrous - but... it is what it is!
Climbing stand? Yep, still scared - put me up 15' and that is about it.
Ladder stands? I am better in these - but still cautious.
Chain on stands? Used to love them, now they terrify me.
I was once ridiculed for putting chain on stands waaaay too high - some of my friends...