From Facing Couples, a R-H Wave, or other applicable formations.

1. Square Thru on the n-th hand (Step To A Wave);
2. Centers Trade;
3. all Step & Fold.

Ends in a Mini-Wave Box.

Catch 2:         before Catch 2   after Square Thru 2 To A Wave   after Centers Trade   after Step & Fold (done)

Split Catch n [C2]: Split Square Thru on the n-th hand (Step To A Wave); Centers Trade; all Step & Fold. Note that {n} must be greater than or equal to 2.

Catch anything {n} [C3A] (Johnny Preston 1981): From applicable formations. Square Thru on the n-th hand (Step To A Wave); do the anything call; all Step & Fold. Ends in various formations. The anything call replaces the Centers Trade and can be an 8-dancer call.

Catch Swing Thru 3:         before Catch Swing Thru 3   after Square Thru 3 To A Wave   after Swing Thru   after Step & Fold (done)

Split Catch anything n [C3A]: Split Square Thru n To A Wave; do the anything call; Step & Fold.

See also Step & Fold [C1] and Split [Square Thru] CONCEPT [C1].