The 99 M.A. is still reliable as a buy and sell indicator on weekly SPY charts.
great stuff ! of course hindsight is a good thing to have, why would you have sold the 2008 crossover and ignored the small fakeout to the upside, but opposite ignored the sell crossover in 2012 and instead saying that was a fakeout to the downside ? Both situations beforehand created H&S tops while having rising MAs. I remember I went short 2012 because it looked bearish (H&S, crossing MA, broken the uptrendline since 2009)