Quote from osorico:
Something I do, as mentioned previously, is use ATR, but with a twist...
I take the maximum ATR average over the last x bars and multiply that by a factor of usually 1.6 for ER2. If result is near some TA level, adjust accordingly. Your x bars and factor are dependent on your timeframe and your r/r. I use x of 3 on 15m and faster charts. If there is going to be price expansion I want to recognize it quickly and if needed adjust.
Any chartware worth using has some method of doing this. Using Ensign its a snap with 2 DYO lines.
Good trading.