I know you're supposed to hike with other people, but sometimes that isn't an option. I mostly hike from the trailheads near Anchorage like Prospect Heights, Glen Alps, and some on the Turnagain Arm. If I hike alone with a bear bell and make sufficient noise, is there really anything to worry about in these locations? Most hikes tend to get above the treeline pretty quickly anyways. Am I being naive?