Yoyo

The Yoyo concept was originally intended to apply to those calls that start with an arm turn 1/2, such as Spin the Top or Relay the Deucey. It turns that into an arm turn 3/4.

\syhlines{b2n,g2s,g3n,b3s}	\sxvlines{b4w,g4e,b3w,g3e}

before Yoyo Alter the Wave	after

It was then extended to apply to the first arm turn 1/2 (or equivalent trade) that occurs, wherever that is.

\syhDBDs{b4e,b1e,g1w,g2w}	\sxvLBLs{g2n,g1s,b2n,b3s}

before Yoyo Scoot Chain Thru	after

It must be a distinct trade or arm turn 1/2. Yoyo does not simply add another 1/4 to the first arm turn.

The concept can be applied in ways that really test one's knowledge of call definitions. For example, the first part of Mix is a Cross Run. It is not a Trade followed by a Spread. The second part is a Trade.

\syhlines{b2n,g2s,g3n,b3s}	\syhdiamonds{g3s,b3e,g2n,b2w}

before Yoyo Mix	after

Some uses can be quite esoteric.

\syhlines{g4n,b4w,g1n,b1w}	\syhlines{b4s,b1n,g2s,g3n}

before Yoyo Scoot Reaction	after

While Yoyo only applies to the first arm turn that occurs, concepts such as Piecewise can affect that.

\syhlines{b2n,g2s,g3n,b3s}	\syhlines{g2n,b1s,b2n,g3s}

before 1/2 Crazy Finally Yoyo Swing Thru (known to Plus dancers as Spin Chain Thru)	after

The concept has sometimes been used to turn a Partner Trade into a (pushy) Cast Off 3/4. The tastefulness of this is not widely agreed upon.