Cube watermelon into three 1x1" cubes. Cut cucumber into half-moons.
In a shaker tin, muddle the watermelon cubes and pour off excess juice.
Add 1oz of Monin Watermelon Syrup with the Bourbon, mint, bitters, pama and lime juice.
Shake ingredients and double strain into Chicago style glass over crushed ice. Take three ½ slices of cucumber in a separate dry tin and add 1oz of soda and muddle.
Shake and double strain to top the cocktail.
Garnish with three watermelon balls with mint between each ball on a skewer.