From a Tidal Wave, Facing Lines, or other applicable formations.
Arm Turn 1/2; Center 6 Cast Off 3/4 as Very Ends
Counter Rotate 1/4;
resulting Center Wave Hinge & Spread (to become Ends of Parallel Waves) as Others do the Centers part of
Cast A Shadow
(Leaders Cloverleaf as Trailers Extend; Hinge; Extend).
Ends in Parallel Waves.
Note: To smoothly dance Relay The Shadow, those doing the
Hinge & Spread often lightly tap hands as they go by each other, rather
than pause at the handhold, Hinge, then slide apart.
Relay The Shadow anyone Criss Cross [C2V]:
From Facing Lines or a Tidal Wave. Do a Relay The Shadow, but those
doing the Center's part of Cast A Shadow (the anyone dancers) do
the Center's part of
Criss Cross The Shadow [C2]
instead. Ends in Parallel Two-Faced Lines.