1. Choose top 5 gainers in the preopen to go long.
2. Choose top 5 losers in the preopen to go short.
Among these 10, focus on the ones showing the maximum activity.
Go long/short on breakout of 15m opening range respectively.
Take out 50% of position when price moves 2x the opening range. Another 25% when price has reached 4x the opening range. Last 25% when price reaches 6x the opening range. Or close everything by 3:25pm 5m close.