Being attacked by a wolf, mountain lion or bear is the least of the worries a hunter should face.
A competent hunter should really fear no beast if he uses his most deadly weapon, his brain.

It is the impact on prey species and the inability to keep the wolves in targeted areas that is the problem.
Wolves are an incredibly efficient predator, can you imagine if grizzlies or mountain lions hunted in packs?
They are the pirahnnas of the woods when it comes to their hunting tactics.

http://www.youtube.com/watch?v=Wi0J3CFqiXo&feature=related

They do sometimes hunt solo....

http://www.youtube.com/watch?v=-Vkh64YT_wQ&feature=related