No whistle, What I do is first go to the player. I tell him he just got a T, this hopefully will stop him from doing it again. I get his number. Go over and Get is in the book as a T, player T, also indirect to the coach. One Team Foul. I will then if the coach is there explain to him what we have. When we start the game I will signal a T before we shoot the free-throws so the crowd knows. I do this for a book T to start the game too. Also make sure the table knows how to set the arrow and please don't do what someone I know did and start the game with a regular Jump ball.