I have observed many golden crosses, some through live trading...

I have observed many golden crosses, some through live trading and a lot just looking back over charts. I find that it's not uncommon for there to be a fake golden cross after a long down trend, the SP will often already be starting to decline after a big spike in those cases, then you might see a death cross and another golden cross shortly after with much more conviction. These are often in tandem with elliot wave patterns. You can't see this on the IMU chart because it hasn't had enough of the ups and downs to show it, but on more volatile stock charts you might find them. Of course everything really depends more on fundamentals and announcements so I think it's best to be flexible when I look at those sort of things