I found the UI to be overly complex re: zooming and overviewing the levels.

For a game where you are penalised for flubbing shots it is surprisingly ready to trick you into flubbing shots.
There is very little way to know where your ball is going when taking a long shot.
The ball arc just moves too fast..if the whole game followed a one-button design sure; but it doesn't.

It's a fun concept but the shortcomings just made it annoying way before I started having fun.