I guess I don't trade technicals usually, but I like to use them to know what traders are thinking.
If I do a trade, my favorite one is to just buy something crashing, which I think has decent fundamentals and isn't going to die. Then you catch an oversold rally and you make decent money on it. It has to be crashing enough, though, that you believe the selling is over and it wont drop much more. A lot of declines aren't good enough, but some are, like the recent bitcoin / market decline.
RE: Market Movement Tip - Chart Triangles