For one thing, he must NEVER be anyplace where his previous victims could ever be again. And frankly, if it were up to me to make the laws, he'd be asking that from prison, where he'd spend the rest of his days, guaranteeing that he'd never offend again.
I went to court ten years ago, losing everything I had to rescue my kids from a child rapist their mother was going to marry (she eventually did, after they turned 18). I don't have any soft spots in either my heart or my head for child molesters. I'd like to see them all tortured to death over the course of a week, until they died slowly, then put video of the best parts of it on the Internet as a warning to the rest of them.
Yes, I believe in vigilantism when it comes to this. We surrender our rights to seek our own justice to a society that in exchange protects us from the evil. Our society has failed the innocent most spectacularly in this situation. I'm an agnostic, but even if your God exists, he couldn't make a place in hell hot enough for a child rapist.
Thanks for a straight-up answer.