Gee, I wonder why they would get defensive? They put all the time into hauling in bait and setting up a stand to habituate a bear only to have some guy with hounds and ATV run through and chase it into the next zipcode.
Personally, I don't think either method qualifies as hunting but I would vote for baiting over hounding every time. Some bear wanders in to have a couple of donuts with his morning coffee and suddenly finds himself at the pearly gates vs the poor bugger that's run for hours by a pack of angry dogs till he finally gets into a tree. Then waits there with dogs howling till someone finally shows up to put him out of his misery (and that's the best case scenario). All so some guy and his back yard full of noisy Dog Chow gobblers can get their jollies. Baiting is a thousand times more humane/ethical and, I'm sure, at least as if not more effective at managing the resource.
This isn't about simply killing animals to keep their numbers in balance. It has to be about showing them some consideration and respect while we do it ... or we will be facing an unwinnable battle against the antis for public opinion. The validity of hunting as a management tool goes out the window if it necessarily involves unnecessary stress and suffering for the animals. And please don't give me the "give them an inch, they'll take a mile" crap. If we're not proactive in regulating hunting to be something that's more than our having fun killing/harassing wildlife, we'll always be on the losing end of the fight.