Empty and rinse bucket. Add mix, rum and enough water to fill within about ½ inch from the rim. Stir well to dissolve. Freeze 12-14 hours. Stir, scoop into glasses and serve. Makes about 4 (8 ounce) servings.
More ways to mix it up:
Garnish each drink with a skewer of blueberries, a lime wedge and mint leaves.