There are two folks in the US I would like to meet.
They are Michael Baccarini and Tiina Booth. Both are high school ultimate coaches. High school coaches who have coached teams to multiple National Championships and World Championships. They also run cutting edge youth camps and train up ultimate coaches.
So I really enjoyed reading the book they have just written: Essential Ultimate. It is a fantastic resource for coaches and players alike.
My review is at Amazon. I make a few comparisons to Parinella and Zazslow's "Ultimate Techniques and Tactics" in the review, in case you have seen that book.
Essential Ultimate is available through Amazon, or through the publisher Human Kinetics here in Australia.