A little known statistic that is calculated in the Footprint Bar Statistic indicator is called "Delta Pullback". The Pullback is the pullback of delta from its last high or low. If Delta last bounced off its high before completing bar, the finish will be negative (or zero). If Delta last bounced off its low before completing bar, the finish will be positive (or zero). So Pullback acts like an intra-bar momentum (order flow) indicator which proves very valuable at turning points. Here is a chart from this mornings ES trade which shows it rotating back and forth.
Notice how at many of the key turning points the Pullback was very noticeably large in an absolute sense. These could be used as entry signals if no position is currently in place or they could be used as profit signals if already in a position.