Well you should be able to get coho killers all over the place, They sell them everywhere up here, even west marine has them. They are made by Silver Horde. The experts all say to troll with or across the tide, I go against that depending on the strength of the tide. if it's ripping you are wasting you're time fighting the current but if it's somewhat mellow, I 'll go against the tide and still catch fish. I like to troll at varying speeds for kings but for returning kings my magic # seems to be 2.7 mph, and all the way to 4.0 mph. Blackmouth anywhere from 1.5-4.0 . These are GPS speeds, I don't use a paddlewheel, but go more for that 45 degree angle on the cables. Good luck.
Sark