How to exercise w/ 1 arm bent over reverse cable fly on board

Learn how to exercise by doing the 1 arm bent over reverse cable fly on tilt board forward to backward.
EXERCISE DETAILS:
Primary Muscle Group: shoulders
Secondary Muscle Group: lats, rhomboids, traps - mid
Base Movement: reverse fly
Equipment: cable, tilt board forward to backward
Training Type: balance and stability, weight training
Level of Difficulty: 5
Sport Specific: tennis
Position: bent over, standing
Movement Variation: unilateral
Plane of Motion: transverse
Joint Action: shoulder girdle retraction, shoulder horizontal extension
Grip: neutral - medium