Combine Cucumber and lime juices, Simple Syrup, basil leaves and the 1st half scoop of Ice into a mixing glass.
Cap, then shake vigorously 20X, until chilled.
Remove cap.
Add club soda.
Add the 2nd half scoop of Ice into a collins glass.
Strain drink over the Ice.
Garnish with a basil leaf floating on top of the drink, as shown in the photo.