The first dynamic step in straps training is learning how to progressively increase the basic swing amplitude. The hollow to tight arch motions to execute a tap while moving through the bottom are similar to the regular swings with straps but wearing the straps correctly the gymnasts can afford very big back and forth swings without any fear of ripping off the bar.
The gymnast then makes a backwards roll to dislocate. The athlete must shift the wrists to maintain proper weight support at peak height or his body may collapse against the bar. Notice also the wrists shift on each inverted giants ascending phase to support.
Starting to teach back handsprings without arm swings may help the gymnasts to get used to keeping the arms closer to the head in the early learning stages plus it can save the coach a couple of face slaps. Place the gymnast on a position as if they were coming from a round off or another back handspring.