Given the current posting climate, anyone whom does use it would have to endure so much negativity in public posting, it'd be difficult to see what they'd get out of doing so. You might get better responses if you started a journal and documented your path on understanding their use, their efficacy and invite through PM folks whom expressed proficiency in the past.
Plus 138.2%, 161.8% and a few others. From the right anchor points, in other words not just from this or that high/low.