Not helpful while archery hunting, but the biggest deterrent is noise. As you backpack hike continue talking, singing, arguing, just talking loudly to the griz. They want to see you less than you want to run into them, so they move away from you. Keep anything with any odor away from wherever you sleep. Bears have incredible sense of smell ... from miles away! A griz can smell a little capped tube of toothpaste tucked way in the bottom of your pack, so stow it up high or in bear proof container far away from tent.
We encountered what's shown below every day during a seven day backpack trip through the Thorofare of Yellowstone and Washakie Wilderness, an area with a dense population of griz. We never did even see a bear.
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