Adapted from a recipe used at the Indian Harbor Yacht Club, Greenwich, Connecticut. Note: It's important to sip this drink straight from the glass, not through a straw, in order to get the full effect.
2 ounces Mount Gay rum
1 ounce Myers's rum
1 1/2 ounces fresh lemon juice
1 ounce simple syrup
1 maraschino cherry, for garnish
1 orange slice, for garnish
Pour the Mount Gay rum, lemon juice, and simple syrup into a mixing glass two-thirds full of ice cubes. Shake well. Strain into an ice-filled highball glass, and carefully pour the Myers's rum over the back of a teaspoon so that it floats on top of the drink. Garnish with the cherry and the orange slice.