The PUMA phenomenon is based on a negative, that's neither useful nor powerful. If those folks are attracted to conservative values that's fine but just voting against someone is inadequate. Your PUMA friend should choose Fred over Hillary. We don't need to dilute our core conservative values any further leftward, we need to do the opposite.
Slamming people who are coming to terms with shattered beliefs, is like pissing on a spark while trying to ignite a flame. It ain't gonna get your fire going and it won't bring more people into the fold.
Now maybe you think that is the right way to do things, but you might want to think about it.