It seems we will get the start of the bounce when the markets open today. Selling into strength first at 0.618 (~$3057) could be prudent, then selling again if we see a move to 0.5 (~$3122). Since it is not possible to know exactly how much of a retrace we will see, getting out at a good price makes more sense than trying to get out at an ideal price.
The stock market often acts as it was governed by the laws of physics. The move down was fast and went further than one would have expected, so the move back up will likely appear as fast, but unlike the move down, it will meet a great deal of resistance, which for a bouncing ball is gravity, but in this case is fear, uncertainty and doubt.