One is not enough. Everyone has the "skimmer down the hole" story. This one is made from galvanized steel into a 5" strainer cup mounted to a brawny handlebar with hook. Top end features an effective chipper (includes chipper cover for safety).Specifications and Features: 5" skimmer, the size preferred by most anglers Chipper clears edges and reopens just frozen over holes 20" length handle keeps you dry