If you are winning consistently with minimal drawdown, your broker will simply start copying your trades. There is absolutely nothing illegal about that.
I'm no expert on law , but I bet it comes pretty close to illegal , certainly in the uk . where I think there are supposed to be firewalls between employees who trade and those who do "other stuff" etc That's not to say it doesn't happen , I bet it does , but I also bet not officially and not in the full open glare of the law , which should tell you something.