I ALWAYS troll at the depth they bite at!
Sorry- couldn't resist :grin: I can never make much rhyme or reason out of kokanee. I try just over the top of the school first, then drop down in 10 ft increments, until they hit or they don't. Then I switch lures and start over until I find what and where they want it.
Maybe some smarter experts at these finicky fish will teach us both something! Good luck and let us know how you do. Jim