RG, depending on which end of the Island the bear is located at, it may go to Jo Green's in Wolfeboro or Waldo Pepper's in Laconia for lunch...
Seriously, they may "den up" in a cave or in the middle of a pile of old logs, or they may just get into a thicket. If they do not feel threatened, they may very well sit down in the thicket even with humans around. Black bear would not be considered "dangerous" except if cornered (like under a camp, in a shed, etc.) or if it's a mother with cubs.
Here's a link I picked up by "Googling" 'living with bears' from your post. there are a lot of links.
http://www.mountainnature.com/Wildli...eForLocals.htm