I'll be your data scientist for $150/hour, or for free
ownlife.eu
ownlife.eu
For that price, you shouldn't be afraid to put out a bit.
Remember that as a consultant for hire (independently) you are the business.
Plus you make it easier for people to verify your skills with your real ID.
I know you may feel uncomfortable with it, but it's worth a shot, especially as a way to "advertise", although referrals will still be your biggest money-draw.
Good luck!
For what it's worth, I'm responding to inquiries with my identity and more details. So far, I've received several really interesting projects.
On a general note: my apologies for not including my identity and portfolio; I didn't want this experiment to be the first hit when you google me.