About 15 years ago we flew in for bear viewing with Emerald Air out of Homer. At that time it was owned by Chris and Ken Day. Ken was the mechanic (piston Otter) and pilot. Chris was everything else, including our guide for the day.
We spent it on the ground, within 100 yards of a mom and her two cubs. (Ken spotted her as we came in for landing; fortunately fairly close to the landing lake.) We spent hours just walking, photographing, and watching. Mom had eaten so much salmon that she was just slitting them open with a claw, eating the roe, and throwing the "husk" away. The kids were very curious about us and kept moving toward us, but when they got too close mom would give them a sort of growl-grunt and they would hurry back to her.
Emerald Air has changed hands a couple of time since then and has gotten bigger, now flying a couple of turbine Otters. But for anyone who can spend only a day, I'd still recommend the experience. It's the real deal, on the ground with the bears in their real territory.
Bear info:
https://www.emeraldairservice.com/about-bears