Bux (the premium currency of the game) are usually in very hard to reach, out of the way places. If you manage to get all of Bux on one court in a course you will receive an experience bonus.
However, sometimes Bux are purposely placed over water hazards to make sure you suffer a penalty. It's better to finish the course with good score and get back for a replay.
Spend your Bux on card packs since they contain incredibly helpful hats, power ups, and even have experience point cards.
Having a hat on will provide a beneficial effect to your game.
Take your time with the shot there is no reason to rush it.