| 摘要 |
A trolling diver includes a planing body with a ballast weight at the front. A mast is pivotally mounted to the center of the body for movement fore and aft between forward and aft positions for climbing and diving. A trip line extends from the front of the body, through a trip line guide on the mast, and to the rod line. The lure is connected by a leader to the body. A spring connects the aft end of the body to a point midway along the mast to bias the mast aft. The spring exerts minimal and substantial reset torques on the mast when in the forward and aft positions by having the spring force act through a short and long torque arms. The torque arm in the forward mast position is preferably adjustable.
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