Horizontal/Vertical Oscillators and 2-line facility still none the wiser!?! Put in layman’s terms the Lobster Elite 1 feeds the ball at the same depth horizontally across the court at different time intervals, while the Lobster Elite 2 and Lobster Elite 3 in addition to this vary the depth of the ball using the vertical oscillator. The Elite 3 has the added feature of the 2-line facility which feeds the same shot to either side of the court to a repetitive depth.