The Knife Jig is a Japanese style lure that has been popular there for Tuna fishing and Rockfish. It can be fished similar to a Flatfall but its slimmed down shape causes a flutter and erratic action different from other lures. I successfully used this lure for the past two seasons and landed multiple Bluefin Tuna over 150lbs. This color combination (pink, blue, iridescent, and glow) which has been dubbed "Katy Perry" was the most successful for me and my friends. You can rig them with 6/0-9/0 Assist Hooks.
Good Luck and Tight Lines!