I think it'd be more fun if the cursor had a predefined starting point in each hole rather than just staying where it is. Having to travel back across most of the screen is a hassle. Also, I'm not sure if the rotating dots matter at all. It'd also be nice to have markings for the power meter, especially where the power meter ends.
Regarding the overall design, I think having the player actually move would work better if there was a golfer sprite above the cursor. It might be difficult to get the golfer to look like they're swinging, but even just a simple still image would give more the feeling of actually being there in a minigolf course. When it's this abstract, I'm left wondering why the game doesn't just let me choose an angle on a nice big circle.