Originally posted by Grailkeeper
Without sounding like a 'suck up', you have pretty extensive knowledge on the crypto scene, Do you know of the footage they speak of? Or could it
just be an extremely enhanced version of the original?
I don't remember seeing any 'red' on the foot pads nor do I remember seeing any 'red' water (can't even remember any water

).

As they say... Sucking up will get your everywhere...
Seriously though. When I read about the "pool of blood" my reaction was pretty much "Blood? Blood! What the [snip]...?" Which was then followed by
a frantic search for the supposed blood.
The long answer is... I have no idea what the hell he's on about. As with the supposed ponytail, braids, bangs and topknot there is NO evidence of
this. (Yes you read correctly. It seems that the Patterson film Bigfoot didn't know what hairstyle to go with, so "she" went with all of them...

) As I understand it, this is something Davis discuss at Bigfoot conventions. Like the recent Speakers' Presentations at the 20th-Annual Ohio
Bigfoot Conference:

He began by showing a panoramic view of the film, and moved on to an artifact which appeared to be a braid which shakes with the head. He says he
is an observer, not an analyst, and he observes bangs and a topknot and ponytail on Patty which blows in the wind and indicates no sagittal crest.
...
M.K. showed
a frame where she appears to scrape her foot on the ground, almost as if she is attempting to hide it. A pool of water is shown
which was dug out by a backhoe and
appears to be red, like blood or something. It is unknown where the blood is from, since Patty does not
appear to be injured. M.K. revealed that Patterson was actually filming from the hole with the
red water in it, and this is why you sometimes
see in the opening frames where Patty appears to be higher up.
Source
Emphasis mine.
Which frame is it? We don't know. And I suspect we won't know, as Mr John L. Johnsen states in a
comment:

“Spotlight on the Patterson Gimlin Film” is not presently in release, pending the inclusion of this newly found evidence. However, I would not
count on it being re-released as I feel that M.K. will soon wash his hands of this matter as he nearly did back in November of 2006.
This last "stunt" may have been the last nail in the coffin in Davis' Bigfoot interest?
The short answer... I have no idea what the hell he's on about. The supposed blood is from a single frame of the original Patterson film computer
enhanced by Davis. We don't know which frame it is.
That said:
If anyone knows which frame(s) of the Patterson film the supposed blood is, please share!