I believe everyone is making this system much more complicated than it really is. If you follow the rules, you should be able to stay out of trouble. This is what I recommend:

avoid Asian session
trade European/US session only
trade the majors
trade 30M/1H TF only
use higher TF as confirmation of trend

That's it..... The one reason why I like this system is because its simple compared to many others where you have to look at so many indicators, calculate this and that, draw trendlines, etc. If this system was so complex or indicator overloaded then I would never use this system to trade.