Hey Coach – JV High school girls coach here – I pick 1 thing at practice a day to have them focus communicating (Yesterday it was ‘Shot’), If I don’t hear 1 defender yell it, she runs. They don’t like being singled out, so most pick up on it quickly. The other things is ‘catch them being good’ – make it a point to single out the player who is doing the thing you want them to do, and make a big deal of him in the middle of the drill. Tell the other kids ‘be like X’, and you’ll set the bar for how you want them talking. Happy coaching!