Help with a greyhound system

[xcode]

Hi guys, I am really up and down with a system and I cannot make it win constantly. There is something I miss I don't know what. One day I am making up to 200 euro and the next loose 300. How it comes that my system works for a day or two and then looses for a day or two. It makes no sense. Here is the system: Rules: 1. Find a race with at least 3 joint favorites. Favorites are selected on betfair race card with prices below 5.0. There should be 3 priced under 5.0. 2. From the betfair greyhounds form guide select the dog which the last race was the slowest from the three. 3. All dogs in the selections must be in the same grade. 4. Lay the slowest dog. Please tell me what else should I include in my system to make it work constantly? Regards, xcode

[aliando]

Re: Help with a greyhound system are you trying to find patterns where they do not exist? no system will win constantly, try aiming for profit over significant period.