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Check description to understand the theoretic part:
Start from staying on the net in position like Sit (1), jump up with jerk transit (350' back + 720' body-left directions) to position like Mantis (26) standing on the net.

Concretely muscle jerk need to do from position look like Flying Squirrel (9).
For this exercise - i recommend to know how to fly next positions:
Before doing Back Megascrew (v.21) - good to check and practice next exercises: