I recently received this book as a gift.
My dog and I began formal agility training about 3 years ago, have been running at trials about 1-1/2 years. I had some specific problems at trials - my dog did not work away from me, I had difficulty with tight turns; he consistently knocked the first jump bar; I didn't trust my dog. For example, at class I would use a rear cross and even a blind cross but at a trial I would revert to a front cross.
I read several chapters in the book: working away, tight turns, discrimination of obstacles, motivation problems and a few others. We practiced the exercises in the yard and at class. In the past four weekends we had 8 trials. My dog moved up from Open Standard to Excellent Standard, we finished Novice Fast and have two Q's in Open Fast. We moved up from Novice Jumpers to Open Jumpers and have two Q's.
The book helped us resolve some problems resulting in more consistently successful runs. The lessons in the book are valuable to those running Excellent level runs as well as Novice and Open. I found the book to be a great addition to formal agility training.