There are a few software packages that incorporate this concept with an indicator that basically creates a mirror of price projected forward using a closing price line. I find that method a little messy because there are so many kinks in the line. A few years ago I created my own indicator that uses a moving average instead of mirrored price to smooth out the line. This works well although it does introduce lag which is inherent to moving averages in general. Also, as with all cycle type tools, inversions are an issue to be aware of.
I've created a video that goes over how I use mirror cycles and also show a quick and dirty method to create a mirror cycle forecast and also pickup possible inversion points. Enjoy!
Mirror Cycle Video
