If so, how do you trust you're getting a quality tenant that is safe?

Most are folks that have the emotional control of a 5 year old, controlling attitude, an omniscient narrative in every thread & topic, act like an online hall monitor, and constant attention seeking. 

Here is my system that I have shared on the forums previously:It all starts with online ads, within which are several pre-screening questions I request be answered in their response to my ad.

Evan took an online class and learned how to replaster walls and yes I do mean old school plaster.

Kodak was a industry "beast", a definitive "safe" investment, until it wasn't, and it went to trash in a flash.   

I've heard some rumors of Airdna skewing data a bit (I've heard this first hand and read online.)

You can also check their reviews online at Google, Facebook, or Yelp.

I've bought a ton of homes pre-foreclosure and at auction, happy to be a resource on that stuff, plus we just launched Bid Pirate, which is the one place online for NH, where you can see all the upcoming foreclosure auctions in one spot - you can learn a lot from the regulars at the auctions........ get after it, sister!

The counties themselves take 2-4 weeks to record a document online.

I volunteer and host an online group for our local chapter of the Real Estate Investors Association (REIA).