Summer Mocktail: Watermelon Cooler

One of my major weaknesses in mixing is N/A mocktails.  When it comes to cocktails I like to think "What liquor will work well with these flavors?" or "what liquors will work well together?"  or...well...something along those lines.  I really have a hard time finding the right balance with mocktails.  In working on my summer cocktail list, though, I really wanted to have some nice non-alcoholic choices with summer flavors.  According to my staff on Wednesday night, this one is a clear winner:

Watermelon Cooler
Method:  Shake/Box
Glass:  16oz Pint
Garnish:  Mint sprig

Shake with ice:
2 cubes watermelon
2 slices cucumber
6 mint leaves
2 lime wedges, squeeze and discard
.25 oz Simple syrup

Fill glass with ice and add about 2 oz of Sprite (or other lemon-lime soda/pop)***.  Top with a splash of club soda and box.  Garnish with a fresh mint sprig.

***Don't shake the carbonated sodas with the listed ingredients.  You don't want to flatten the carbonation.