I've been catching relatively big winners lately (0.35-0.50+), but I'm still not sure of the best way to take profits. That is, which point would be optimal in the long run given risk vs. reward. I used to take profits if the price closed on the opposite side of an EMA, now I'm using ATR. If a stock is in an intraday downtrend, and its ATR is $1.20, and it's already dropped 30 cents from the day's high at my entry point, then I set an exit 70 cents below my entry. I'm tired of scalping and want to get into longer-term daytrades; spanning 30 minutes to a few hours.