Look at this drawing done by patterson, BEFORE the film and before he had ever claimed to had even seen bigfoot.
Strikingly similar, and debunks the claims by believers the detail of it having breasts was something that a hillbilly like Patterson wouldn't come up with.
Keep in mind that the footprints that were found in that area before Patterson investigated it have been proven to be a hoax. So what are the odds that someone tricks him into going somewhere to find bigfoot, and even though what led him there was a hoax he randomly happened upon a bigfoot anyway, and one that looks nearly exactly like a drawing he made up years earlier.
I don't buy the whole "couldn't be faked in 1967 bs."
The whole basis for that claim was made on the fact that they didn't have stretchy fur material back then in hollywood costumes, BUT the claim by those that say they helped hoax it is that they used a fresh animal skin to make the costume, which would stretch and look better than even today's best artificial special FX material.
I can't prove it was a hoax, and it is a very good one if it is. But extraordinary claims require extraordinary evidence and this is not that.