Goofing off for serve practice really helps with touch, understanding bat angles, approach angels and swing paths, putting the same type of spin on the ball in different ways Etc, EtcPutting paper cups on the table as Gates, or barriers that act as a path the ball has to follow.You don’t even have to do a serve as such. Just hit the ball and learn!!making the ball return to the net with a different number of bounces before it bounces back over the net,Making the ball turn 90 degrees and follow the end of the table. With side/back spin, neat side spin, side/top spin.see if you can make the ball curve around the net post.Target practice, knock the cup over, make the ball land in the cup, one bounce and in , one bounce backwards and in,there’s loads of stuff, like trick serves etc etcYou may not use the things you learn in a match but you can take certain bits n pieces and incorporate into a match quality serve. For example the ball turning 90 degrees and tracking along the end of the table with various spins, 1st you goof off and just get the ball to do what you want, then gradually incorporate into a serve.Its great for practice for touch, feel, how to brush the ball etc etcOh yeah I forgot to mention ITS FUN !!!!!!!!