I'm not even reading the rest of this thread, just going to answer your question from my opinion after hearing him speak at Salt Fork a few weeks ago...
He talked about how much he was ridiculed by his local people. His wife went to the bank teller and she refused to wait on her.
He said that the next day after they came back, he was so exhausted from staying up all night to hike back a long way over rugged terrain, then having to get the truck and horses out of the river that rose up, that he crashed out to sleep when they got home. The next day, Patterson announced it to the public, and Gimlin caught some grief for not being there when it was announced. After all these years, it seemed like he was still ticked off about that.
He also said that he didn't get any money from the rights to that film.
As I say this, I want you to know that he was very cool about it and didn't get nasty or accusatory, he was just stating the facts as they were. And this is just my opinion from what I took away from it. He doesn't talk much but when he did, it was powerful. He had the audience eating out the palm of his hand.
Listening to what it was like for him personally to get to Bluff Creek was just captivating. Patterson asked him to go because he really wanted the research and to get prints from there. Gimlin was free that day and went with him. Gimlin did a LOT OF WORK to make that trip happen. He's just a low key country rodeo guy that was good with horses and was up for an expedition.
One of the coolest things that he said, was that "I saw it with these two blue eyes. I was not looking at it from behind a camera. I saw it make it's move and watched it the whole time. Patterson was rushing to get the camera." They only had 1 minute left on the reel because Patterson had been filming other things. Gimlin said that while Patterson was rushing to get the shot while looking through the camera lens, he tripped on a rock or something which is why you see the shot jumble for a few seconds. Because he saw it from start to finish with his two blue eyes, he feels that he got the best look at it. It's burned into his brain and at 82 years old, he tells the story like it happened yesterday. He also said something about the horses getting spooked off when it showed up and they had all the gear and extra film on them. I'm not sure when exactly that happened with the horses running off, but I think that's how it goes from what he said. It was just one of those moments. They went up there to document and track prints and fortunately had less than a minute left in the can to capture the event.
I did hear from a very close friend of his that there were a few times when he would give a talk and people were just milling about and not paying attention to him. I can't even imagine that. When he was at Salt Fork, he was treated like a hero. He said many times that we were the best group he had ever spoken to. We were just so grateful that he came all the way from California to talk to us, and we are grateful to Tom Yamarone for bringing him to us safe and sound!
So what are his regrets? I don't know. It seems like there were a few snags along the way, but honestly, from how genuine and nice he was to each and every person that he met, he's just enjoying life now. I got to actually spend some time with him, as did anyone that wanted to. He was so available and I don't know how he kept his energy up. I thanked him for being here and for everything that he has done, and he turned it around on me, and said I thank all of you people for carrying it on. What a guy. So sweet, so cool, tough on the inside, but soft on the outside. He speaks the truth as far as I'm concerned and no one will EVER convince me that that film wasn't real. I challenge a skeptic to listen to him talk about it if he ever does again. I was just one of the lucky few that heard it.