Yeah, waterfalls...haven't done any yet :( but thanks for reminding me :)
Anyway, this is actually my first - and only - LR stack so far. I love long-exposure and for some reason I'd always avoid stacking techniques. But they can be pretty cool sometimes :) Here I had a flashlight and I held it focused on different spot on different photo, which is why what whole area in front of the rock is well lit, so LR made my job easier :) Yay stacking! :)