Well. Those who manage managed accounts earn a percentage of the profit they generate. And if they don't invest themselves usually is because they are professional traders but maybe don't have funds enough to invest (or maybe they work with their own tradings and others ones).
Anyway, I will continue investigating and researching about the subject, lets see if I found any good solution
I received in the past even some PMs with info that someone is willing to manage my coins and has extensive knowledge of trading.
But I would never trust someone I never met to manage my coins as it would be hell of a stupid move. I advice you to do the same.