I do it all the time turkey hunting.
I stood still, for well over 10mins, thinking a Bush was a deer.. apparently i thought it moved lol and eventually got startled by a doe that snuck in without a sound right under me! Jumped more than I'd like to admit! Lol
I have only hunted with a decoy once, and was not startled by it. But I have seen other objects and thought they were deer multiple times (even the same object the same day). That's another reason to have binos!
The real question is how many times have you come to full draw before realizing it was your decoy?
:grin: Never... that would be a heck of a convincing decoy!