After Undertow’s downward pull, this sketch introduces opposing upcurrents and side-slip threads so force becomes negotiation instead of one-way drag.
i. Counter-flow ribbons balancing downward drag with rising lift.
ii. Denser crossings where opposing pulls knot into turbulence.
iii. Sparser field with longer recovery lanes between conflicts.
Sketch 103 asks: what does motion do when opposing pulls share the same water?