I've met and talked to him a few times, the last years ago when I was outfitting prariedog & coyote hunters. He asked for a free hunt for himself and 5 or 6 friends, I not only said no but "He** no"! He didn't show me much then and hasn't since. In fact Zumbo's a source of great amusment here in WY. He once gave a seminar on Elk calling at the G&F's annual EXPO. It was a total joke and most left it quickly. I think he needs to stick to selling his cookbook, it'll cause less damage.
That's my story and ima stickin to it!
PS: I agree with Skyline.