FetteredChinos
Not as many as you might think actually, and the zero line crossover is not the full system I was a bit vague about the other details as it gets complicated.
For example there were 2 signals I took as false before exiting out with a small loss (5 points) on the trade above. I am now short again.
The system does take a lot of small losses, although they're usually between 5 and 15 points due to the stops and so on I have in place. There are less profits (I have noticed a pattern towards trades placed 7-9am, and 4-6pm being more profitable in general). The profits when they come tend to be quite large, and I think if I could work out a better exit I might be able to increase them.