While I don't think I'll ever low crawl holding a turkey fan or decoy, I don't have any ethical problems with decoys. Or setting up on a strutting area or pasture with a decoy out either. Reaping (crawling up to a bird with a strutter) on the other hand is dangerous and stupid.

I know that fanning works though. First time I saw it done was years ago when a guy hunting with me on a pasture edge thick with palmettos cut a palmetto frond and held it by the long stem through the fence turning it from side to side. The gobbler I'd been calling in vain to came in on the run to the palmetto. It wasn't even a dead brown one, but live and green...Geo

Turkey ethics is just a matter of legal as far as I am concerned; Hell, we shoot'em on the ground! We use decoys for ducks, doves and even deer.