Which hose is least likely to be used in drafting scenarios?

In drafting scenarios, the primary consideration is the ability to create a sufficient vacuum and facilitate the transfer of water from a static source, like a pond or a river, into the fire apparatus. Hard suction hose is specifically designed for this purpose, as it has the rigidity to withstand the pressure created during the drafting process and is less prone to collapsing.

Medium-diameter hose and small-diameter hose are more suited for supplying water or for attack lines, as they are flexible and can easily maneuver in various situations, but they lack the characteristics needed for efficient drafting.

Large-diameter hose, while capable of transferring large volumes of water, is not commonly utilized in drafting scenarios because its design primarily serves for water supply, not for effectively pulling water from a source. Therefore, it is the least likely hose to be used in drafting, as drafting requires specialized hoses that can handle the vacuum and potential suction without collapsing or impairing flow.