I have been daytrading the YM lately with decent success. I'd like to ask a question to traders who have been trading YM for a while. I have been keeping a chart of $DJI open and marking support & resistance on it. I wait for S/R to fail on $DJI before pulling the trigger on YM. I notice that sometimes support/resistance will fail on YM, however slightly, while $DJI holds. So my question is, in your opinion does the dog wag the tail or is it the other way around. Which one leads the other? Thanks for your opinion.