When I hiked out to Cedar Creek Falls, I initially thought I may have picked the wrong day. It was during spring break and there were quite a few people swimming when I arrived and then a large group of high school boys came a bit later. The boys were jumping in the water -- normally I would be annoyed but I noticed that the splashes caused the funnel shaped pattern of reflections and I took advantage of it for a foreground shot.
Note: the hike is 6 miles round-trip with about 1000' of elevation gain and no shade. It wasn't hot when I went so the hike wasn't bad but it can be brutal with high temperatures (people have been airlifted out).