Tried, looks better after the fact, doesn't really have enough to trade off I find.
Bollinger Bands is where it's at, took me a while to trust and get head around mind.
I've done some backtesting with PSAR and had some positive results when I utilized multi EMAs. Depending if your going long or short just make sure that your Two EMAS are supporting your long or short thesis and also insure that your entry is close to the shorter EMA timeframe that way you don't overpay.