well, i can tell you what i did so far today.
was my best day for this year. traded futures, for example ES and European index futures.
initial position was small, with a stop relatively far away (cause of the volatility), when the trade went in my favor by the amount the stop was away of entry, i doubled the position, and kept adding while the market went in my direction, and kept raising the stops.
when i thought buying/selling pressure gets lower i went out manually.
worked great so far today, managed to ride the ES upwave after open for example, or in the european markets the short squeeze this morning.
just don't add to a loosing daytrade position especially in this market conditions.. things may turn from bad to disastrous, when you get caught on the wrong side