Jump cues are allowed. It is legal to cause the cue ball to leave the surface of the table by elevating the butt of the cue and, with a downward stroke, force the cue ball to rise off the playing surface. For the shot to be legal only the cue tip may touch the cue ball - the shot must not be "scooped" by the ferrule or shaft. Any miscue on a jump shot is a cue ball in hand foul. Shooters are not allowed to break their cues down, to the shaft only, in order to attempt jump shots. See the rule titled "Miscue Jump Shot"  under the section "Interference and Fouls" in this manual.