Butterfly Presents: Footwork Drills, Stefan Feth, Drill No. 8 Butterfly Presents: Footwork Drills, Stefan Feth, Drill No. 8 (Video by Stefan Feth / Bowmar Sports) Table Tennis Footwork Drills by Stefan Feth, Drill No. 8: A favorite of Coach Stefan Feth, Both players play random from each other’s backhand, with 60% power.