My go to rig for big trout is a one once banana sinker with a Double Wammy that I have replaced the hooks is came with, with gamakatsu hooks. I very the leader length from 24" to 48" . Thread a third of a night crawler up the shank of the top hook, then hook the tail to the lower hook. Troll 0.5 - 1 MPH, the slower the better.
Kokanee will hit the same rig, but I have better luck running a snubber between the weight and the lure and using pink power bait maggots on the top hook and white shoe peg corn on the bottom hook. A blade string is also very productive. If you are not getting bites change up your flasher blade color or throw a pink hoochie above your books.
That is a good start, lol
Good luck
