Yes Maine does some great fall bear hunting over bait with bows. Its a fairly high success rate on the opener and fun. Some outfitters do am and pm. You can hunt them with bow or gun during the season as well.

My best luck was low pressure PM only. First afternoon there I shot a nice bear off bait.

The bait is around 25 to 30 yards from the stands.

You sometimes see multiple bears but sometimes just one. They are sneaky and really quiet for their size.
They also will do dog hunts for them too...or at least they used to. I have never done one of those though.