Whatever side of the fence you’re behind, you should train the deadlift sumo AND conventional. Why? They work synergistically to get you strong while minimizing weak points.
We rarely ever did “agility drills” with our athletes, and the majority of their agility scores consistently improved. I’m very confident that proper box squatting and sumo pulls were a major contributor to this. Step-by-step, here’s how to program and cue them for your athletes.