Hello! Difficulty of dialogue is caused my weak English! I communicate with you with the help of the machine translation system. I the trainer from Russia, from city of Ufa. The system of preparation in the different countries is very interesting to me. I studied systems of America, Italy, Finland much. There are serious differences in systems of preparation, system of motives and the further career of players and in mentality, culture of the different countries. You ask, that is 3ì-6ì-9ì is a distance up to net the player throwing(stopping) or serving a ball. Also it is possible to replace a throw impact of a ball in a floor on the party(side) of giving player. And the most important - moving and a stop to the rack for processing a ball.