love to hunt,
I hunted Tucannon last spring, which is right next to your unit. I learned to watch the open ridges with timber in the bottom. The bears come out on the open ridges to turn over the rocks where they are more easily moved. Then they eat the bulbs that grow on the ridges and under the rocks.
Watch for the ridges that have newly blooming yellow flowers. That seems to indicate the right timing for the bears to be there. The elevation will rise as the Spring progresses.
Do a lot of glassing, and be prepared to hike and pack in steep country. It was a really an awesome hunting experience.
Good Luck!