If you're comfortable with the support and resistance levels within SD, you could not trade if the price of the index is within x% of those levels. I've never been satisfied with the support and resistance calcs as they are. To me they add little value, though I'd like to have calcs that do.
Are you trying to automate? I use the Stochastic[StocK,14,3,3,D] for the color bar setup, and looking at the daily chart for the Dow, it's typically red or dark red during each slide. Have you tried Stochastic[StocK,14,3,3,D,$INDU] > ## for an entry or Stochastic[StocK,14,3,3,D,$INDU] < ## for an exit? I would test outside the slides though, because it may hurt you more than it helps you in the long run.
Market Data 
Markets 
AI
