WAC 220-350-220. Definitions — Troll line

"Troll line" when relating to its use for commercial purposes shall be defined as a line used to drag a hook or hooks behind a moving fishing vessel that is making way by means of a source of power, other than drifting by means of the prevailing water current or weather conditions. The troll line must be affixed to the vessel and must not be intentionally disengaged from the vessel at any time during the fishing operation.