Cross-Body Unusual Surface Delay
Flapper Stall is a Cross-body Sole Stall.
Demonstration of a Flapper Stall.
Bring the kicking leg across your body so the sole can meet the footbag from the opposite side.
Turn your foot so the sole faces the footbag and make clean, controlled contact with the bottom of your shoe.
Use a smooth cross-body stall while bending your support leg slightly.