What should the umpire do to determine if a bowl is short when it appears to be blocking?

To determine whether a bowl is short when it appears to be blocking, the umpire should measure it directly against the jack. This method ensures that there is an objective assessment based on the defined measurement criteria in the rules of the game. By using a tape measure or some form of measurement tool, the umpire can clearly identify the precise distance of the bowl to the jack, thus confirming if it meets the required distance for being considered "in play."

Measuring directly against the jack removes ambiguity and provides a definitive answer, allowing the game to proceed smoothly and fairly. This method aligns with the standard practices in bowls, which emphasize accuracy and adherence to the rules. It’s important for the umpire to rely on measurable data rather than subjective opinions or assessments from players or other participants, as these could introduce bias or confounding opinions. This ensures that the umpire acts in an impartial manner, preserving the integrity of the game.