I said I have been told by all these people that they have seen mountain lions. I just know what I have been told. I have never seen one. Many credible sources have. I am a little bit of a skeptic myself.
However, the people who claim that Mt. Lions are trained to kill coyotes are way out in left field. Sure you can train a wild animal when it is in captivity but once it gets out into the wild, it will go for the easy meal again. Personally, I have a hard time believing a mountain lion would ever have anything to do with a coyote.