I actually followed your companies Instagram before I even had a profile on biggerpockets. 

But, as with everything don't lay all your eggs in 1 basket. try some other forms of advertisement, like Facebook, twitter, Instagram, craigslist, for example I don't have a lot of FB followers on my business page but, it get's me a lot of clicks to my website with a $5.00 boost campaign where I can collect data from buyers and sellers.

sourceid=chrome-insta... or Guru...Or, better idea... contact a local realtor, get a copy of their purchase and sale agreement (it will be most up to date and approved for the area that you are looking to wholesale in...) then look for the assignment clause and use it... "... and or assigns."

As I found out trying to find one in Vegas I could not find one.. and even got turned into the department of finance in NV and got a nasty gram from them...

Facebook , Instagram , and a repost of the property on Craigslist.  

I am a master plumber in my day job,I would get rid of the guy immediately if you had him sign the proper contracts when he started working,if not you need to work things out with him and get the job done,most likely he has ran out of money and will start asking you for money to finish Do not pay this guy any money to finish,if he can't afford to finish most likely he will tuck his tale and disappearMost all contractors are living from one job to the next,hire only licensed and insured guys The idea of saving money flipping houses will only cost you more money in the endGood luck @Dele Ola

What are some tell tale signs to spot the good ones from the scammers?

Not that this will happen everywhere, but definitely a cautionary tale.

You can start looking up agents in the area, see who blogs, facebooks, instagram, or any other strong social media activities related to work.

If a deal goes wonky and Don speaks from years of experience the first thing an attorney writing you a nasty gram is going to say is you sold a security without a license..