Is this an unpredictable indicator? This seems to be useful the odd time so I will keep it. Realize that other indicators can be used to show more reliability.  I show a few examples of the recent data from the data sets.

http://stockcharts.com/school/doku.php?id=chart_school:chart_analysis:chart_patterns:hea

http://quantlabs.net/blog/2018/06/assessing-auto-inverted-head-shoulders-technical-anlysis-crypto-currency-algo-trading/