There was a post on this forum, years ago, from an accountant with a wealthy client who did something similar to pay himself to be his own family's investment manager, apparently legally.
There were some complications, like having to pay oasdi taxes, that made it profitable only if there were substantial sums changing hands within the family. I suspect you need a (fairly experienced) accountant to pull off a maneuver like this while staying right with the law.
On the other hand, the IRS has been absolutely savaged by budget cuts. This is probably the best time in American history to attempt to commit tax fraud. Not that I would ever recommend such a thing, I'm just saying that the odds of being audited for questionable tax deductions are probably lower now than they were a few years ago.