I watched "Expedition Bigfoot" a while back.
They had discovered that Bigfoot does not stay in one location, they move around depending on (I can't recall, deuh, haha).
But they based their expedition on that, knowing exactly what their timeframe was to find bigfoot. And knew where to go next after that.
It did work as they did find evidence, IR footage, footprints, hair samples and so on.
They also experienced that Bigfoot uses infrasound.
At various points during their expedition all of them were exposed to it and suffered side-effects. One so severely he had to be taken to hospital.
Also scientific proof that Patty, the Patterson-Gimlin, video is not a fake but a real creature, aka Bigfoot.
They even managed to calculate her height.
They also had scientific proof that it is quite easy to make yourself invisible. That's not Sci-Fi anymore and it stands to reason that a species has the ability to do that.
That would explain the footage of shadows while there was nothing to be seen. But clearly something is moving and casting the shadow.
They caught something humanoid with Lidar a few times while there was nothing to be seen with the human eyes. Although once you could see something with your own 2 eyes...
http://www.youtube.com/watch?v=MTyKPiz4e7Y
Another one on handheld Lidar of which they showed more angles in the episode than in this short clip, but alas.
http://www.youtube.com/watch?v=oTMA_TqMoIc
They also captured it plural times on IR, at one point in a hotspot one of the team was surrounded by at least 9 tall humanoid shapes!!
The other were elsewhere around the lake, one told her she had to get the hell out of there as it wasn't safe.
People saying there isn't real proof... watch the show.
And what more proof do you need? Seeing one slaughtered and dissected?
To me it's more than enough proof.
If you need scientific proof, plenty of that around. I mean, IR, Lidar, sounds, infrasound, all either recorded or checked out by experts, IS proof. Incl. the hair samples. It's scientific.
Plus what Rock said: all indigenous people around the world know a version of bigfoot. In Australia, Asia, US, and so on.