Centuries of eyewitness accounts, PGF, audio of large mammals unknown to those who study such, hair samples, fecal samples(has anyone had a thorough assay of the parasite load, that alone would prove quite significant were species specific forms found, but unknown in the known species of the region from which the sample was removed. This could also provide some insight to its phylogeny) the "unknown primate" DNA samples (which certainly merit cross comparison to determine if the anomalous elements are consistent or at least fall within a reasonable range of commonality) and just how many print castings are there now, would you imagine? A good few displaying aberrant dermatoglyph patterns of a complexity that until recently would have been a bit of a task to "take it to the substrate" as it were.
If that is still not enough to incite interest and inquiry, on an academic level, within the fields of, say, genetics, taxonomy, physical anthropology, cultural anthropology, linguistics, evolutionary biology and comparative A&P,to name a few, on the possibility that even just one of those thousands of indicative events or artifacts is indeed genuine, for if that is so, then there's a lot of catching up to do, and the race is on.
It surprises me that there have been no multi-discipline research teams put together by one or more unversities(perhaps even comprised of specialists from different universities, then sharing the data, each for their own pursuits) with better funding, latest tech, and grad students to do the grunt work. Certainly, similar research/study has been initiated on considerably less credible evidences, only the subject wasn't an unrecognized uber-primate whose acknowledgement by the scientific community could well cause quite some upheaval on a number of levels.
But yeah ...I'd say it's mounting...none too fast ..but neverless