I would like to practice my serve but I dont want to run to the other side of the court to fetch just 3 balls. I do have a good number of dead and half dead balls. I'm not looking to break a speed record. I am newbie server so my point is to get it across the net and into the correct service box. Will it make a big enough difference if I hit with dead balls or new ones? Also... How in the world do people hit topspin or kick serves without framing the ball to high heaven. I can't for the life of me hit the ball even remotely correct. Even the grip makes me nervous since the racquet once flew out of my hand due to using an overused, dead replacement grip. Any advice appreciated!