lixir88.
We're all learning, but in my opinion the channels left by flowing water create paths fish generally use when in deep water, and sometimes in shallow water as well.
Especially when dealing with steep, deep, clear water lakes, the fish will relate to the channels or channel edges. They may be 60' or 100' or whatever above the bottom, or to one side, but they will still be associated with the channels most of the time.
A good map is useful to create a game plan. This time of year for Trout I would try the headwaters first, because it's easier to fish shallow as opposed to deep. The headwaters bring in the bulk of the nutrients, cooler well oxygenated water, and carry the food, and provide a bit of forgiveness by providing a bit of water color compared to the main lake which can hide some sloppiness in presenting your bait or lures.
I would do this early and late in the day, and if this did not work, I would go deep then, using the channels as my guide. Deep water fishing is a lot like work, to me, but sometimes it is the only thing that works, so I do it if it is needed to catch fish.
Fishscalz