I like this from Xfactor

If DJIA is +50, you may have 5 minutes to run;
If DJIA +100, you will have 30 minutes to run and 30 minutes to short;
If DJIA drops 50, you will have 3 minutes to square off;
If DJIA drops 100, you have 30 minutes to double long and sell off;
If DJIA drops 200, you will have 1 hour to long and 7 hours to run.