This is how pros poach without getting burned.
Anna Leigh Waters doesn't poach randomly. She waits for very specific conditions. When the ball is dropped to the middle and the crosscourt player takes it off the rise, the risk of poaching drops close to zero. From that contact point, it's extremely hard for the opponent to redirect cleanly down the line.
That's not aggression. That's timing.
Takeaway: Stay home on down-the-line drops. Look to poach when crosscourt drops are taken off the rise.