Smash Defence in Doubles (8) Wall hitting practice-7 (Use racket head cover) Ok now if you are happy to hit the target and 80-90 percent you are hitting the target then you can try this one ok you can use cover and hit against a wall and try to hit the target that will give you a lot of power in your forearm as well as your finger power can be much stronger using the cover like this because if you make big swing you cannot hit continously with cover you still have to make compact strong hitting actions