A good server can hit slices, topspin, top/slices, flats, and twists to all 3 quadrants of each service court. Using just slice, the bounce height is usually right where the returner likes it. Some players can use a combination of slice and UNDERSPIN, to keep the ball around lower thigh heights at the baseline. Top/slice and tops usually get the ball to bounce around 5' high at the baseline, while twists can go a bit higher, into the 6' range for good twist servers. I would HOPE all of you can hit all your various serves to the 3 quadrants of each court.