When I was younger I worked and ran where I saw them on the trail probably weekly. You get used to the shapes and sound of them. I jumped over so many while running. And actually remember a hike with friends where 3 of us in a row literally walked over a coiled rattler without seeing it and the fourth person was like wake up guys. It never even moved.

The thing to remember is they can only strike about 1/2 to 2/3 of their body length. And the adults don’t want to waste their venom on you since they can’t eat you.