Giving other possibilities then the regular ones is important for a full education of people.
I like to give as much information in possible. Your book has logic. I like logic and good understanding for the tasks of the dog and understanding between the handler and the dog.
I think your system makes sense. I am not using the electric stimulation in tracking with my dog, but might with some other dog. The whole article setup makes sense.
In general I think it is important that the dog likes to find the article as one of the major goals.
I feed and play on the articles random and not using food on the track is a big advance in a ant polluted environment.
I combine your ideas with others tracking systems.
Frans Slaman – USA