Drew:
Obviously some hoaxes are better than others. A hoax using a commercial mask basically is doomed as soon as clear head photos become available because we can search for the mask, as was done for the Bigfoot body in the freezer, the tongomi video, and Matilda. All were exposed within a day or two of a researcher seeing the face clearly.
But every analysis is fundamentally unique because every incident's evidence is unique. We use the same principles of analysis, but use specific analysis techniques or methods based on the individual evidence we has to analyze. In Matilda's case, all we had is the head shot, looking sideways and turning to face camera. No body, no walking, etc. For the sleeping figure, all we have is the curled up body shape, some vague movement, and no head.
So while methodology in general follows the same path, it is customized to the specific evidence of the incidentat hand.
But one general rule is that the more evidence we have, the more resources we have to expose any hoax. That's one of the reasons the PGF isn't a hoax. The amount of excellent image data evidence exceeds all other incidents together, in terms of both volume and quality, and yet the PGF withstands every method of rigorous inspection that would challenge it's integrity. Every possible test or line of analysis comes up 100% positive for authenticity. And that's why most attacks on it's authenticity go to the crappy tabloid gossip about Roger's life and the "backstory". That's all they have to build claims of hoax, and there's nothing scientific about any claim based on that material.