Umpire Communication

[5050pete]

I am an umpire in a new crew this year. Friday our crew officiated a scrimmage. It got old telling players to "use the ground to get up", "rolloff easy". Can anyone give me suggestions of what they tell players after the play is dead? Also some suggestions of what umpires say to players that are going at it after the whistle would be appreciated. A new official would like to hear some suggestions from some veterans. Thanks