Back in the day, when I hadn't choosen my 3 favorite TA indicators. I use to use it all the time. Now days I only use it if there is a strong price pop in one day. Those tend to screw up the DMI indicator for a few days to a week or so. So I replace the DMI with the Aroon. As most indicators are price relative to time and the aroon is time relative to price. So large price pops don't effect the indicator accuracy & reliability as much.
You have to remember to evaluate the aroon sideways, not top to bottom. This is hard to get use to at first. While green above 70 while red below 30 means be in the trending play. And the 50 cross can help with exit & entry like most oscillators. Long sloping parallel lines show accumulation. One more thing; I don't concider the indicator to be a momo indicator like most books. I concider the aroon as a trend indicator mainly.
Normally I recommend using the standard parameter for all indicators. And did use the 25 day back in the day. But now that I use it in replacement for the DMI I lower the paramenter to 14 days. As thats how long the DMI usually takes to settle down completely. And I want to catch any quick actions I would miss after ceasing DMI watch, after a unusual price action.
14 day gives a quicker 50 line cross and I plan swing trades on two week cycles anyway.
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