There is no one-way. A wise man once said that there are many roads to Rome. My corollary to that is that some are more direct than others. I get very nervous when people preach and teach one way. You need to have a have command of a variety of means and methods of training and then be able to select the appropriate ones necessary to accomplish the task at hand. If the only tool you have is a hammer then everything becomes a nail, trite but true. Make sure you know the principles behind what you do, then you will be much more versatile and be able to adapt to any training situation.