InvisiLeaders - FluorocarbonInvisiLeaders: Virtually Invisible Fluorocarbon Leaders for Superior Performance InvisiLeaders revolutionizes leader technology, making traditional steel and titanium leaders seem outdated. Fluorocarbon's similar refractory index to water makes these leaders nearly invisible underwater, creating the illusion that your bait is swimming naturally. This increased realism leads to more strikes from fish. Unlike steel, which can kink and fail, fluorocarbon