Agree that most bobbers are obsolete, particulaly the red and white "cannon ball" types. The 1 exception is the "Winget" bobbers; they advertise they will cast 1/3rd farther than a common "pencil' type bobber, and are `hydrodynamic` in that they are designed to "sink" easier and with less resistance than almost any other type other than Thill`s "broom straw" style, which aren`t easy to find. They are also easy to rig as slip bobbers and are more accurate to cast into a given spot.