Purpose

To trail the jack 2m through the head or
To take a bowl or bowls from the head or
To split two bowls or
To follow through a short bowl and stay or
To retain the delivered bowl close to the head if the shot misses the target or
To promote a short bowl.

Method

The bowl is delivered along aiming line 2 using either of the aiming points A or B to give an extra 2m of weight.