No need to pick the top or bottom as no one can do this, you just need to scale in, and overall you will be OK if you are "right" in the trend. In the QE environment, you know where the trend will go
I pick tops and bottom, M1 intraday all day long, well I can, if I can be bothered to actually trade, not 100% ofcourse. Although I do scale in, but only 2 positions.