One of the systems I've been looking at lately has been overlaying two MACD charts w/different parameters as a bottoming indicator. Specifically, I'm looking at the default Stockcharts parameters (12, 26, 9) and overlaying (36, 78, 27) for a longer-term perspective. I try to ID stocks that are crossing from negative to positive on the short-term histogram, and who appear to be in a bottoming pattern on the longer term graph. Here is an example (look at a week ago):
Here's another example that is a bit more recent:
Before venturing too deeply into this, I wonder if you or others with more expertise/understanding of TA might be able to share their thoughts on the approach. I recall years ago you speaking about the MACD crossover, but not about modifying the deafults.
Thanks for any opinions and perspectives.