hmm, let's see what we can do with just 2 indicators

If you want a system do this.
200EMA, 50EMA...

When 50EMA is above the 200EMA, wait for price to close below the 200EMA and then close above the 200EMA (with the 50EMA still above) @ this point go long... If price then breaks the recent low, you should reverse your position because usually then a big downwards move occurs.
Shorting is opposite.

Check it out on a chart, any time-frame, especially Daily (less time/less work)

Trend following systems are great. I use lower averages, but the principle is as old as the hills and works for me.