Easy to use-not 100% but what is? Trade GBP/USD or even it using the Eur/USD. I have not tested it using over pairs.
Utilize the 15min chart.
21 EMA
14 RSI
Go long on a clear cross up on the 21 and a definite cross up over 50 on the RSI.
Go short on on a clear cross down on the 21 and a definite cross down below 50 on the RSI.
That is it!