I don't know what specifically those books utilize in regards to steadiness but if you revisit the sit command or sit and stay if that is how you taught it and ensure steadiness in the midst of all sorts of distractions you will be servicing you and your dog well. In training do not let your dog pick up all of the marks. If you really want to hunt your dog this year, leash them in the blind. There are many ways to train a dog and not one method fits every dog. Do things the way you want to do them. If you are a new trainer there are programs that will more clearly present information and the process to you then others. The clear presentation of material however does not indicate a quality program necessarily. Good luck and if you have any other questions feel free to PM me.