Mifune drinks hard, yells, and he is the coach of the losers.  His methods are ancient and he pushes the campers to the mental and physical limit.  But there may be a method to his madness.
You can't tell where 
the ball will bounce.
No importa dónde rebote, es 
difícil predecir la bola.
Da igual dónde dé, no se puede predecir para dónde irá.
Não dá para saber aonde a bola vai.