HFT (High Frequency Trading) in a nutshell.... You do such things and you will catch the highs and lows on the wrong end; the microsecond algos will fill the book faster than your book level can display. Next thing you know, you got your trick bid/offer filled and find yourself high and dry with an island trade. Best to leave such strategies to those who are able to invest the necessary capital for the technology and data feeds for such endeavors. Stick to a higher timeframe than this, your eyes can't see and fingers move fast enough; not for humans. CO