I don't have a copy of that Esquire article anywhere, so it's tough to remember what courses it included. I've certainly seen a bunch more worth writing about in the past three years, traveling to update the book.
Pacific Dunes has gotten so much press over the years that I'm not sure there is another book worth writing. The only part of it that hasn't been well documented is how I came up with the routing, so I am starting to work on a book (or two) about that process for each of my courses. Between that and finishing The Confidential Guide series, I think my commitments as an author are pretty full.