Which method works best?
Actually it seems to me that there are too few differences in result so far to make a determination.
Glacier hazes roadside bears; Grand Teton, Yellowstone let people close. By Cory Hatch, Jackson Hole News and Guide.
Back in the days before 1970, Yellowstone let people feed sandwiches and twinkes to bears along the roadside. About 60 tourists were injured a year as a result. Yet there was a great outrage from the public when the practice of roadside feeding was stopped.
Today bears are coming back to the edge or roads, but feeding is not allowed. Injuries are few to none. If injuries increase, how will the public and Park Service react?