Customizing Rabbit's Revenge can be done in several ways. If you prefer a sweeter drink, you can increase the amount of grenadine or pineapple juice. For a less sweet, more tart flavor, a splash of lime juice can add a nice zing. If you want a stronger cocktail, you can increase the whiskey content or add a splash of another spirit. Experimenting with different types of tonic water (flavored or artisanal) can also significantly change the taste.