People claim to have achieved this level of interaction with bigfoots, but so far these stories are just that: stories. I suggest that to avoid the killing of a bigfoot, people who say they have this level of interaction should produce video of this quality or better.
I'm not saying, "Put up or shut up." I'm saying that we should do this for them, the big guys. There are already several groups actively pursuing the killing of a specimen. One will eventually be successful. Can those who take a more compassionate stance beat them to the punch?
Bigfoots are real. The "discovery" of the species is inevitable. Can we avoid killing one to prove they are real? Not unless we try.