Strong Swift Durable is a legit training facility in Jackson, WY. They used to run two separate websites called Mountain Athlete and Military Athlete, but now they merged them both under the SSD name. They train elite military guys, alpine athletes, etc. They have a big game hunting specific program (link below). I've used them for other programs, but not the hunting program yet. The other programs I did were awesome. The founder/owner is very cool and responds to email questions personally. Check them out.
http://strongswiftdurable.com/shop/big-game-hunting-training-program/
http://strongswiftdurable.com/shop/big-game-hunting-training-program/