how much confidence do you need in a long term system

[liero1]

hey guys,

I am wondering when to actually start to invest real money into a long term betting system - I like to model my systems with historic data and the best shot so far is below (horse racing). Ideally every year and every month should be positive ROI but you see one negative year and there are obviously a lot of months below 100% within those years.. But - through the high amount of bets I am quite confident that this system actually could deliver long term profits?! 

second thought here is - its a quite high odds system so you would need a lot of bank and small-ish stakes to make it work..

Just trying to get some opinions.. 

 

[Zemside]

I would just use minimum bet levels till the bank built itself .Would need a heck of a lot of patience with that one though.