The friend I often backpack with is a lifelong hunter and bigfoot enthusiast. We do a bit of research together .. mostly compare notes and call on each other when we need brainstorming.
In 1998, long before I met any of them, he and another of his friends hiked into the area I now research for a couple days of swimming and fishing. In those days they were not "packing" on such trips. Some "somethings" tromped through the corner of the camp spot, stopped, and one broke away from the group approaching the tent, touched it, dragged its hand across the fabric, and exchanged "muttering" similar to the Sierra sounds back and forth with the others before leaving. They didn't know what to do so they went to sleep. The next morning the dog had to be pried out of the tent and would no longer go out in the yard to pee after dark .. in town. Broke its spirit.
My now-friend and I met online on a forum in 2010 and in person in spring of 2011. Though he'd gone to that spot a couple times a year before that experience 1998, he didn't go back again 'til we went together .. mid-late August of 2011. He said he wanted to, planned to, but he could always find some reason not to.
So .. yeah.
MIB