At school, where such rules were not enforced, some kids used hair gel on one side of the ball. Most were too unskilled to really exploit it but a good bowler c

At school, where such rules were not enforced, some kids used hair gel on one side of the ball. Most were too unskilled to really exploit it but a good bowler could achieve what felt like a metre of savage sideways swing, enough that a ball that started out looking like a wide would finish up whistling past the ears of the hapless batsman.