Starting formation - Tidal Wave, Ocean Wave of Six Dancers.
Those who can turn by the right one-half (180°), then those who can turn by the left one-half (180°). If "right" is not specified preceding the command to Grand Swing Thru, it is understood to be a right-handed Grand Swing Thru. If Grand Left Swing Thru is required, it must be specifically directed - "Grand Left Swing Thru", in which case, those who can turn by the left one-half (180°), then those who can turn by the right one-half (180°).
STYLING: Styling is specifically the same as described for the basic swing thru.
Timing: 6