One of the first studies of bigfoot was based on their locomotion according to the famous images taken in the Patterson Gimlin film. Since then many researchers have discussed and fussed over just how these creatures move on two legs. Here's another great article by Sharon Day of ghosthuntingtheories.com that discusses this very subject. Check it out:
"There is a great deal of chatter in the community about how Sasquatch walk. Many who are considered experts are trying to compare their locomotion to either apes or modern humans. But, Sasquatch is anatomically what anthropologists refer to as "robust," such as was Neanderthal and Denosovan body types. Neanderthal possessed a different pelvis, shorter legs and longer bodies, with robust bone structure. Taking that into account, they would have a locomotion that would be on two feet, but different than what we identify with "human" locomotion.To read the article, follow this link.
Below is theory proposed by Karl Sup, Sasquatch researcher, and myself. This is not the end of the discussion, but the beginning of one about opening our minds to a different process of walking for a more robustly built being with more body weight, longer spine, and shorter legs. Hopefully, this can start a helpful discussion on how someone with a robust frame would walk and how that differs from us homo sapiens who can step off the ball of the foot and bear our weight on that delicate process."