This one may seem a bit daunting, but it's not too bad if you use the right settings. Host a game by yourself and choose the Custom game mode.
Change the following settings:
Max shots per round: 50
Ball shape: Cube
Gravity: 1.25x
Once each hole loads, slowly move your mouse forwards while spam clicking at the same time. Because of the ball shape and gravity settings your ball will barely move at all letting you shoot again almost instantly. This will net you 900 shots per course.
Once you get the hang of it you'll be getting 50 strokes on each hole relatively quickly, I managed to average about 50 strokes per 13 seconds.