You can hit the Blues on the surface with a fly and that would be a hell of a good time. I imagine a big streamer pattern would do the trick to simulate a herring.

We fish a spot up off Vancover island where you are 2 miles out and troll over a sand bar for kings 35 feet deep. Once the Blues find you you are done. You first know they are there because you haul in half of a 30lb king

So once that happens we put on the steel leaders and take them for a ride. Don't kill them we need them in the ocean.