The Cairns Swimmer is a sinking trolling lure made of solid space-age plastic that will not absorb water. The Cairns™ is made with a stainless steel wire frame. It works great at slow speeds, 2 knots for Grouper and at high speeds, 8 knots and higher, for Wahoo and other game fish. The lure has a tight vibrating back and forth action that imitates a wounded fish. Single strand wire leaders are recommended.