Usually I fish Yale, but its been a long time since I've gone after kokanee, but this is what I remember.
Pack some wedding ring spinners, some flashers, worms and a can of white corn. Try any combination of corn and worms on the hook.
Then just go out there and tool around the lake. Make sure to vary the depth that your rig is fishing. If you don't get any bites, then fish deeper. If you cover the ground (or water

) and constantly vary your depth until you get a bite, you should be alright. Once you get a bite, then stay at that depth (obviously) and circle back around to where you just were. Sometimes you can hit the school again. I think I remember trying 20-25 pulls first, and then adjust from there.
But, of course, fishing is fishing. You might get skunked. But if you're watching other boats hook fish and you're not, try moving your rig deeper.
Hope that helps, and let me know how the fishing went.