Just throw and roll! Invite me to sway! The upward lip causes the body to swing from side to side, causing the wool at the rear end to sway and attract trout. Wool yarn contains water and is weighted up, making it easier to throw, and it is also recommended for beginners as it gets caught in the fine teeth of the trout and makes it easy to see when it hits. The upward lip makes it easy to trace near the surface layer, so you can see the moment of a bite and enjoy fishing.