What I really loved about this concept is some of the discussion that came along with this information. The biggest point is you don't want to cue your dog too early. Why? If you cue the dog too early, they throw in a bunch of collection strides, more than is needed. Yes, you will have a beautiful turn, but you will also have a slower course time.
NTP goes along with the premise that you want your dog to run the whole course in as much extension as possible. You only want the dog to put in as many collection strides as they need to execute the required turn (gentle turn, tight turn) and no more. Keep them powering through the course.