It is futile to try and guess and/or pinpoint the bottom... Every time you try to guess the bottom you will most likely get hit by the falling knife. The only way to spot a change in trend is AFTER it has happened... Wait until the chart has a week or two worth of price action that clearly shows a change in the trend.

We've had all the TA guys trying to guess the bottom for two weeks now... only to get burned by almost immediately lol.