As per the charts I've posted previously, I'm quite confident that the bottom is in based on the previous predictions having played out. I'm now looking for confirmation of that bottom, and I think a useful metric for this would be the MACD, which is largely a lagging indicator - as a lagging indicator it will also serve as confirmation.
This first chart, in the weekly time-frame, clearly shows the MACD in close proximity to the zero line. It is turning up, with the histogram contracting, and looks about to cross. Once the MACD crosses into positive territory, it is usually safe to say it is officially in bull territory. The next chart looks at the monthly MACD.