The racket glue is one of the player's strategic tools to redirect the direction of the ball once it has been received by the racket. Each time you activate the racket glue via your power-up bag, you have three chances to relaunch the ball in the direction you want when it hits your racket. You can also accumulate the racket glue bonuses without penalty, although it is best to be patient and not activate them too cumulatively by acting according to the state of the brick board. 'Demo 1' on this help screen shows how to favor the destruction of a 10-point brick over a generic blue brick and 'Demo 2' is a bit longer and shows a bit of a long-term strategy.