There are three finishers in the game: Iversion, Mino Rain, and Replay. Finishers pop out randomly, and are given for FREE on your first try per finisher.
If you missed the free offer, or forgot which ones you've unlocked, and don't want to waste coins on something else (save them for the power ups of the week), log out your Facebook, and log in another Facebook account. You are given another set of coins as well as bonus as if you are starting the game all over again. When you're done, log out the dummy Facebook account, and log in your original account.