Oh, I don't mean blackhat is bad, don't be silly... I'm just looking for most efficient way to do it. I've seen these channels that trick users to subscribe and they get real engagement, rank the same or higher than channels with bought aged accounts and bought views and are easier to manage and seem to be free, it doesn't look like they're paying for anything but can't be sure. Also no need to manually add these subs and likes either after the initial boost. I have most of their method figured out, I just can't figure how not to get banned and I can't figure out how they do the initial boost, since the channels are old already, so they don't need boosting anymore. Don't get fooled, I say greyhat, in the sense that it's real users, but it's forbidden, if you'll use it on youtube without doing some things first you'll get automatic strike from youtube xD.