The Yo-Zuri Dive Board K-Type is ideal for upper and middle depth trolling applications. It provides wiggle and wobble action which gives the lure lifelike movement. When a fish takes a lure, the board flips over and is driven up by water resistance. Ideal for migratory fish and Bluefin tuna. This diving board can be used to reach the middle depths of the water column and has both commercial and recreational applications.