Well, I think at this point, we must assume that the chances of a hoax proponent bringing well-supported, logical arguments is pretty low. Not zero, but we must consider the subject, which makes such things difficult.
Patrick was interesting, in that he did seem to have more interest in scientific details than most proponents, and didn't just go over the same old list from Cosmic Dave et al. He did stimulate some good discussion in the rebuttals. His obsession with the topic is worrying, though.