My charts are a bit cleaner now and although I will continue tweaking things, this is a bit more comfortable for me.
- the doted acqua lines are the previous day high (PDH) and previous day low (PDL)
- the black lines are the value 0 and 1 of the fib extension (in my charts when the lines coincide with the PDL or PDH, the black line hides behind the doted acqua line)
- the red lines are the -50% fib and –1.38 fib retracement
- the green lines are 38% and 100% fib extensions

I took two trades with RIO. The first one was a long trade after a head fake at the ORL. After printing two offsetting bars (the second one with long lower tail) RIO printed two NR bars. The second bar was also touching (although a little bit lower) the ORL. Exited at the first sign of weakness around at the –50% retracement area.
The second entry was short when RIO printed a spinning top right below the –50% retracement area. I exited at the first sign of strength.

The second trade was a failed one and I played an offsetting bar right at PDH. I am going to study this chart a bit better because I am not sure why it failed. One possible cause is that WFC had already tested the ORH at noon then made a lower high before testing it again. So one way to interpret the chart at the point of my entry could be to see it as an inverted C&H. Another thought is that price in fact reversed at $25.50 (around 2pm), and that is pretty close to the ORH (ORH was $25.64). So in fact the real support area was the ORH, not the PDH.