There are several auto locking devices that allow some slippage of rope, therefore allowing a softer fall and less force on the gear. The SUM is one and i think the eddy is another. Apparently the gri gri is not so good for this.
Good:The SUM is great for paying out rope, is ambidextrous, can take skinny ropes and doesnt require that you disable the rope to feed out quickly.
Bad: The downside is it doesnt lower as nicely as a gri gri. |