REN said:
. . . . . i think more hunts are lost then won using decoys . . . . .
I tend to agree with that.
Do think that about 50% of the time decoys
COULD be beneficial, but about 50% of the time they
ARE the deal-breaker.
Where they "unknowingly to the hunter" mess him up, imo, is when the hunter is either setting them out or picking them up. Distant turkeys can see you and it's game over, although you may never realize you've been seen.
Having experimented with and without decoys for years, most of my turkey hunting is done without them, although there are times I use them, mainly very early in the turkey season and when hunting large fields, but only if I plan to stay put for half a day without leaving that spot. Then all too often, a bird will be coming in gobbling, see the decoy and hang-up.
I have had a gobbler decoy draw in an old gobbler, but I've also had them scare off both hens and long-bearded gobblers. And using a gobbler decoy on public land may increase your odds of being shot by about 1,000 percent. It can also be dangerous on private land as there tends to be a lot more trespassing poachers during turkey season vs. deer season.