I've done this before (either with a Pretty Boy decoy or a fan), 100% positive this increases your odds of killing a bird dramatically. I'm not suicidal, and I've also had a gun pointed my direction (while hunting over decoys in a tent blind), so I'm well aware of what can possibly happen out there when adrenaline & emotions run high.
That said, I'd hunt behind a turkey fan or a life size gobbler decoy again, but I'm going to make 100% sure I'm on private land and that I'm all alone (or that I call or text my hunting partners and let them know what I'm doing). Like anything else, common sense and precaution should be used. Hunting closer to home in a more crowded state (PA, NY, NJ)....no way I'd attempt this stunt. I don't think promoting this method of turkey hunting on TV to newer hunters is such a brilliant idea either.