ACTIVITY FEED › FORUMS › Defense › 4-3 Dynamic Defense System Forum › Leveraging the Bubble by #2 › Reply To: Leveraging the Bubble by #2 Eric Kasperowicz Member February 4, 2021 at 6:00 am He is inside leverage…about 8×2…depending on ability level. Now there are a couple things that can help the Safety pre-snap that a bubble is possible. The Slot’s depth? Is the slot on or off the ball? I haven’t seen many bubbles by receivers where they align on the ball. Finally…the safety better not backpedal out of there. that is why we teach a scootch technique. the second the slot bubbles, the safety must drive on it. It is very simple actually once the safety understands the urgency of the situation. Obviously if the safety backpedals first or is late…then it becomes very difficult.