If you are intraday trading then you want to get a high win rate & profit factor then come up with a logical concept FIRST then design the system around the concept.
For example I know that there are a lot of Fibonacci traders in the market so I look to exploit that buy bounces off Fib levels.
I also see that people like to place orders at round numbers I know that large institutions buy/sell near 10 or 20 sma on daily charts so on.
As long as there is sound logic behind the method the system will probably work.
If you get some wombat saying "buy because the 3-amas are crossed up" then you know that they don't underst the first thing about trading because it simply doesn't work because there is no LOGIC behind it. The ama has no special money making powers besides intraday traders are NOT TREND FOLLOWERS.
In short think of a concept exploit it
demo it trade it become wealthy it! It's very simple really!!
Mongoose