Speed skating

Monday night is skating night (except sometimes it's Wednesday) and now I have to stay for two hours, as my daughter N is still in beginner speed (and I feel she probably always will be, as she just likes cruising along and has no real desire to win, which is fine - it's still great exercise). But my son S has just moved up to intermediate speed (which actually looks very fast to me) and here he is (fourth from front - the only one not in a skin suit). I am yet to master sports photography - especially indoors. I'm trying panning, which is why only the middle two are vaguely in focus, as that is where I pre-focused before panning on S.