IMHO, it's not worth it to try to pick the bottom. You will lose 7 or 8 out of 10.
It's better to use RSI divergence and similar techniques to buy AFTER the first/second pullback from the bottom. You will be right only 5 or 6 out of 10, but, with stop losses, your gains will be greater than your losses.
I speak with great humility and with deep scars inflicted by the markets :-)
SG, I don't think any of those tools are useful. You can apply these tools for the past trading pattern and see if the present trading pattern is reflected. If tools can give you so much information then we all can become very rich.