This is the most disciplined skill in netball. It is what all coaches ask for and it can win or lose games.
Only with plenty of practice will your players give you 100% when it comes to defending their own player. You cannot expect a player to perform a quality effort if this has not been practiced at training. Most defence pull out of tight defence after two seconds.
As a coach you must strive for players to apply pressure for four seconds on every ball. Seven defenders and seven attackers. All players should learn both skills competently.