I feel pretty confident around black bears and mountain lion. But my experience with griz is jammed into a 4 month period that was about 30 years ago. And my wife is freaked about any predators, so I think I will do something I have never done before. Hire a guide in the Canadian Rockies. This looks to be pretty easy to do in the lake Louise area. At least the will be three of us then at a minimum, my wife will feel safer, and I'll get to learn some things I normally would not.