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With blacktail in particular, I've found them to be quite curious. I worry about my smell WAY more than I worry about noise. If they haven't seen/smelled you, just heard you, they will hang out to see what you are most of the time. They are also notorious for holding tight and letting you walk by.
I generally cut trails after season (February so I can look for sheds) with a machete, and then hit them with pruners again in August if I'm planning to hunt there.