If you’re this Ben Reynolds, https://www.bbc.co.uk/sport/0/athletics/17325114 , then I’d hate to see you get hung up on a single exercise and run into a string of injuries. Glute power is certainly a key to sprinting fast, but if the hams don’t have the eccentric strength to handle it upon gct, you are going to have problems. Just curious, but where is the injury in the hamstring?