The Willie Mosconi book prescribed a short draw drill with a crescent of balls in front of a side pocket. Taking ball in hand on the first shot then shoot with short draw in order. Getting on the perfect angle makes the drill so much easier. Slight miss alignments can be helped with side. A good drill for learning side and its application in small doses. The number of balls in the arc can be increased as the touch is developed. And oh yeah don't forget C J Wiley likes a Touch Of Inside 