Regarding hot spotting, look at the photo below from a blog. It was one of the largest trout taken in this river in 2007.
Now look at my photo below. Check out the group of mountains in the background and compare with the photo above. I know exactly where this spot is.
But you will note on the left side of my photo, a parking lot full of cars. So this is no secret spot. There are people fishing this stretch every day of the season. You can't hot spot a hot spot.