How can a player determine if a toucher in the ditch is still live?

Using a boundary scope or boundary liner is the most reliable way for a player to determine if a toucher in the ditch is still live. A boundary scope or liner is designed to assist in assessing whether the ball in question is within the defined boundaries of play. When a bowl touches the jack during its delivery and then comes to rest in the ditch, it is considered a 'toucher.' However, its status as live or dead can depend on its position in relation to the boundaries of the ditch.

Visual inspection from above may not provide an accurate assessment due to the angle, perspective, and potential obstructions. Assuming that a toucher is only live if it is centered in the ditch is misleading because the bowl can still be live even if it is resting against the sides. Additionally, while asking the umpire for a ruling is always an option, it does not provide a definitive and immediate way for players to ascertain the status of the bowl themselves during play. The use of a boundary scope or liner is the most conclusive approach, aligning with the rules and standards in the sport.