Zig Zag patterns are dueling flanks in front of the handler: Clockwise Flank, catch, reverse field, Counter Clock Flank, catch, reverse field, repeat. A well performed or proper Zig Zag is based entirely upon the Flank. An immature or poorly performed Zig Zag devolves into alternating Passes. The Flatwork Compass uses natural body positions and natural human to canine positional pressure to communicate Flank vs Pass.
Take a look at the following video and compare it to the active concepts from the Flatwork Compass.
Be Prepared – Tying This to the 4 Hands Form
We have already tied the Zig Zag to the 4 Hands Form with Epic and you can see the same position and movement here.