Here's how to get more bounce from a normal tennis ball - buddy it up with a heavier ball for twice the impact. Hold a ball in each hand and decide which ball weighs more (has greater mass).

There’s still one small mystery, however. Every now and again, [T-Kuhn] says that the ball will bounce in an unexpected direction. It doesn’t seem to be a bug related to the platform itself ...

Then, choosing a court surface made with rubber or foam can also help minimize the sound of the ball bouncing. Apart from that constructing the court with noise barriers can also significantly ...