The difference between the Tripod I and II is strength, the II is more durable and has support on both sides of the mount to support the weight of the MaxBP which leads to more strikes! If you don't already have a good one around the house, we STRONGLY recommend getting one to go with your MaxBP. By having the ball coming at you from a comparable height to that of the pitcher's hand and ball trajectory makes for a much more realistic experience than having it throw from the ground. Our tripod fits perfectly with the MaxBP, making it infinitely adjustable so you can make minor adjustments in trajectory, even down to which part of the strike zone that you want to practice.