No doubt bears are hard to judge unless some monster shows. My son and I hunted Saskatchewan a few years back. I arrowed a nice 350 lb boar the first day. Thought he was big, he was. Two days later my son had bears all around him. Then one saunters in, stands up to mark a tree. He knew he was the one. One shot with with his 7mm wsm and he harvested an almost 500lb behemoth. Skull missed B&C by 1/8 inch. Look for wide small looking ears, crease in his noggin, bigger front legs. Also big boars kinda just waddle in.