From a 1/4 Tag.

As one movement, Extend twice & new Outsides Trade (or Left-shoulder Trade if the starting formation was a L-H 1/4 Tag).

Ends in a 1/4 Tag.

before Ping Pong Circulate   after Extend (once)   after Extend (twice)   after Outsides Trade (done)

From a R-H 1/4 Tag:     before Ping Pong Circulate   after

From a L-H 1/4 Tag:     before Ping Pong Circulate   after

• The handedness of the setup does not change:
  • A R-H 1/4 Tag ends in a R-H 1/4 Tag;
  • A L-H 1/4 Tag ends in a L-H 1/4 Tag.
• From a R-H 1/4 Tag, all shoulder passes are Right-shoulders. From a L-H 1/4 Tag, all shoulder passes are Left-shoulders.
• Ping Pong Circulate should be envisioned as two separate Circulate paths. There is an inside path and an outside path. Sometimes, a caller may activate only one of the Circulate paths (e.g., Ping Pong Circulate, Girls go twice; or, Boys only Ping Pong Circulate).

Inside path:     before Ping Pong Circulate   after	Outside path:     before Ping Pong Circulate   after
Boys only Ping Pong Circulate:     before Boys only Ping Pong Circulate ( = Boy)   after

Once I heard a caller call Ping Pong Circulate 1 & 1/2. He wanted a Ping Pong Circulate followed by an Extend. In my opinion, this is a cute gimmick, but technically incorrect.

Single Ping Pong Circulate [C4]: From a Single 1/4 Tag. As one movement, Extend twice and the new Ends U-Turn Back. Ends in a Single 1/4 Tag. The direction toward which to do the U-Turn Back is undefined, hence it is inappropriate to follow this movement with a Roll.

Single Ping Pong Circulate:     before Single Ping Pong Circulate   after