kokanee fishing in lake Steven

I just caught a cutthroat trout in lake Sammamish, and now I want to catch kokanee. I am planning to fish for kokanee in lake Steven on the first week of September (during the week, less people), but I never fish in lake Steven before. Can someone tell me where is the best place to fish for them (north end, south end etc.) or join me and show me the rope?

Thanks in advance.