I'm sorry but there's no way to do this without playing 24/7 without eating, sleeping, shitting or just about anything else a normal person would do. I tend to assume anyone with more than 3 crafts at rank 50 is a bot and 99% of the time I'm right. This guy certainly isn't a 1% case.
I don't think some people realise how rampant botting is in this game.