I have currently looked into a strategy that looks at tops an bottoms. I find the best way to do it is to use a 3 Level Semafor ZZ Indicator. Although as in manual trading, tops and bottoms only seem that way for the period you are looking at them. Also if you are going to use a 3 Level Semafor ZZ Indicator, I would advise you to play with looking at Tops and Bottoms from 1-5 candles back.