Multiple pre-game dunks.

[icallfouls]

Depending on the game, I have even gone to game management, and told them to let both coaches know that the officials will be on court at 15:00, in the hopes that some preventative officiating and preventative coaching will prevail.

Seems to work pretty well.

If you have good game management they will post people near the area where the officials come onto the floor and notify the teams that the officials will be taking the floor.