I bought one, mainly because it's hard to find enough stuff to fill up all those pockets in my turkey vest and I don't like wasting space
No, I figured it would be a last resort weapon for a hung bird, or even a good locator call. I never had any luck with it til this year. I had a bird hung for over an hour and tried it on him. He gobbled back as much as I shook that thing. Of course he gobbled at every noise I made that morning. He ended up being a victim of a hen yelp (after I backed all the way out of the woods to the next fencerow and called to him, then ran back to my setup)
Try one. Might as well, right? If it only lands you one gobbler in your lifetime, that would make it worth it.
rw