I tried using search for an old thread, but don't know exactly what to call this method.
Essentially, you watch the movement just after market opening and trade accordingly. I was looking back and it seems as if the trades will usually bounce back to where they closed the previous week. Looking at the chart this seems very simple, but I created a statistics-only EA to do the math, and it actually seems to be about 50/50.
I've attached a screenshot for your visual people. Everyone loves eye-candy.