For getting cats out of trees of course. Lol
For grabbing limbs to pull down, as a leader to drag a heavier cord for scaling that wall, or pulling a cooler of food over a limb to avoid bears.
Grabbing loose rope in water, crab fishing style. Dragging a sandy bottom lake/pond for sunken tresure.
Dam fishing, to hook fish as they go out the shoot.
A snare for parameter security
Or simply for throwing for fun. :)