Which leg to lead with in the split jerk is the world’s simplest question but has managed to inspire stunningly complicated solutions.
For example, sneaking up behind your athlete and shoving them with the idea that the foot they catch themselves with should be the lead leg. Cool. That’s battery, and now your lifter can’t jerk because of a neck injury.
Also, they’re going to step with the foot closer to the side they’re falling toward because you’re unlikely to push them perfectly straight, and you only get one shot at it.
You can imagine all kinds of fancy ways to determine the lead leg, and not one will guarantee the correct choice…