Each of them sees a fair amount of hikers hiking loop trails with most of the trails having been constructed to run past alpine lakes and beside the feeder creek. Don't always assume that heavy hiking pressure means heavy fishing pressure. Even on heavily-fished streams, there are sections where the public fishes less. Find spike trails off the loop trails leading to lakes and streams. Look for waterfalls.
Waterfalls have pools that hold big fish .
Waterfalls also often mean that the water above is difficult to reach. Concentrate on streams flowing into and out of lakes. Many anglers fish lakes and ignore the productive water of the creeks. Look at the headwaters and feeder streams. Meadows often come out of canyons and I like fishing canyons.