This solidifies your concepts. Then rotate them back into the game. Player every player, every game. Expect miracles from them. Critique the game for the subs and involve your assistants.
Towel waving and dancing are taboo.
Seldom confront a referee. Verbalize to your captain within the ref's earshot, your displeasure. By going through a third party this diffuses the situation. By using your captain, you get two voices. Referees like to talk to captains.