@Liisa Reimann many things prompted me to ask. "A" frame seems to be hard on shoulders and it doesn't seem to be used by many teams anymore. We are changing the style as a team currently. For OC1 trainning, is needed a different style. Yes, we are adaptable but A frame, for example, seems to me as the hardest to unlearn and as such, the hardest to adapt to a different style. I made the transition to a different style 10 months ago. Of course, I don't have your extensive experience. So, I am taking it one step at a time.