In the comment before, I said to enter/exit at C, but I should have said the smaller A. The point of using the fib graph seems to be in identifying when C fails. In FOREX patterns, they say pick 10 pips under C for your exist when C fails. So here, that would have been between A and C, probably around 138.8 to 139 or so. That seems reasonable. Had I done that, I would have sold at $139, which would have been nice.
Currently we are seeing an increase from about 133.75 to 135. That could be a new ABCD pattern. If so, when C shows up, that would be the buy in... if C fails, then exit with a stop at C or something just below.
This 24-hour run would have netted about a 1% gain.
I have no idea of this strategy is valid or not. Just posting it out here to see if it has any merit, and see if anyone else uses something similar.