No, he's likely guilty because there are numerous credible victims, and he has lied about key points (such as that girl with the yearbook) in a way that makes it clear he's covering things up. It's called using evidence and logical reasoning... you should try those sometime!
We'd love a trial, but we're talking about crimes committed decades ago that would require physical evidence that's simply unavailable. Isn't that convenient? You insist on a trial before you'll accept that someone is guilty (unless it's Clinton or Obama, you've already presumed them guilty), but there can't be a trial, so you never have to deal with the reality that you happily support a pedophile.