Being able to navigate and successfully use a ball screen requires the ball handler to be able to read what the defense is doing, and then be prepared to exploit it. For this hard hedge wing ball screen drill, you are going to be working on using a ball screen, and the defense is going to hard hedge the screen. That means that the player guarding the man setting the screen is going to jump out on the ball screen, and try to drive the ball handler up towards half court.
A big key for the ball handler is to not fight the big man that is hard hedging, let them drive you up toward half court, but as soon as they turn to recover back to their man, drive their hip. Watch this video and notice how the player is patient on the attack and doesn't force. When you force the attack you play into the defenses hands, and they have done their job. Basketball drills like this are all about working on a game situation that a player will encounter during the course of a game.