Most BO or reversal attempts fail
i would say all of them eventually fail.....but you cannot catch the top or bottom so it is just like most of the other rubbish that gets tossed around for eg it is just supply and demand ...
unless you can measure exactly the supply as compared to demand or measure exactly where a BO will fail,it is a shot in the dark
As Seykota said..'if you cannot measure it you cannot manage it' and trading is about management