For charting questios, I highly recommend DART1961 as one of the most knowledgeable chartists on Ihub, and also one of the kindest and most helpful.
However, I can make this observation. If I had $100 for everytime I bought a stock because a "golden cross" was on the charts, only to have that chart tank the next day, I'd be richer than I am...lol.
I use charts as a tool, and there are a couple of indicators I watch for.
RSI over 90 has always told me a correction is coming, and that's usually my sign to sell half or most of position and wait on the sidelines.
I also find Accumulation/distribution to be very useful for confirming that there may be company dilution into a run, especially if the A/D indicators are dropping as volume is increasing...
I think Golden Crosses are great, however a good pennant formation seems to be a better early indicator of a breakout.
That is, of course, my ignorant and flawed opinion.