My 2 cents,
I read "Come into my trading room" by Alexander Elder.
He talks about using divergence from oscillators for making entry-exit. Divergence in oscillator tends to give really good signal, and often you can catch a trend in its very early stage.
Stop losses are a must, though.
Hounds of Baskerville, as Elder talks about it, he says whenever divergence fails, price tends continue with earlier trend.