It is extremly important to practice against spikers who approach and get a set from the setter - as soon as the arm/hands position and footwork have been learned
Drills are excellent for the beginning players to get the correct feel for the blocking – but also work very well for more experienced players who need to get back into the blocking mode quickly.
One key to learn successful blocking techniques is; to practice it with the lower net.
Blocking without worries about timing and reaching high gets you into the blocking mode very quickly. It increases the amount of successful blocks and helps you to learn extremely quick. Without timing and reach issues, you learn to keep your eyes open and place your body, hands and arms correctly.