First most of my hunts have been without a decoy. But when I have used them with turkeys deciding to be turkeys...it's hard to give you an exact answer....I have had several birds gobblers and jakes come flying or running hard into a King Strut decoy. I always put a real fan on it, sometimes a jake fan sometimes a full fan. Several have been on a mission to kick his butt, others cautious or even strutting right along with him. All of them but one are dead....the one got away cause I was an idiot and put the thing too close and wasn't ready for the bird to show up, couldn't move to shoot. I've only ever seen one bird that saw the decoy and didn't like it, instead making a big circle around and going the opposite way...but there could have been others. Another poster is right, even though it's lightweight it is hard to run/gun with them, takes a little bit to get set up properly and not the quietest thing around. I had an HS Jake and a hen out last year and had a bird come out of a thicket and he didn't like that jake decoy at all...then he saw me shift to get the gun on him and blew out before I could shoot him. My fault but something about that particular decoy he didn't like. I now have an Avian X jake will see if the realism works better this year. I will only use these set ups on private well controlled land, especially with real fans involved it would be easy for another hunter to mistake one for a real bird.