This is really a Canada topic, but even on that board it doesn't get much discussion
http://www.rv.net/forum/index.cfm/fuseaction/thread/tid/27898148http://www.bellacoola.ca/When we went there some years back (May/June) we didn't intentionally go bear sighting, but ended up seeing our share, mainly while driving to the Odegaard Falls trail.
We camped at Gnome's Home, pretty nice for a commercial campground, making that the base for 4 days of side roads and hikes. We also camped several nights on the way in/out at rec-sites.
The 'bellacoola.ca' website has good information on things to do and stay. Get the relevant Backwoods Mapbook if you want to venture of the main highway.