We make people take photos of themselves holding their ID and then I also meet them in person for the showing - at least for my units on the NW side of Chicago.I've never heard of these testers, but I am not surprised. 

However, if you feel you need their input earlier, you could offer to pay for their visit to walk the property with you pre-inspection.

Then, over time, probably a few months, start to determine who you would feel comfortable doing a deal with.

If you would like help feel free to reach out.

I would never do sub to for the purpose of holding long term rentals  ( at least personally) .

If you make the person an LLC employee you can get around it, but partner does need to be careful. 

And then again, maybe I’ll dive into both simultaneously since I feel very confident from experience now.Like @Michael Baum Baum said, guests from both platforms can be quality (I vet to ensure this).

Additionally, my husband lived there for six years, and the city feels like a second home to me.

I have about 100k in assets both personal and business I could sell, but part of me thinks that’s extreme and I’ll sell “myself” along the way with all my stuff.  

Feel free to reach out if you'd like an introduction!