Read other reviews from a few year ago on other sites from people who have tried to locate him.

People purchase experiences.

Seems like the few people I talked to that are selling land in Florida are trying to sell it above retail without understanding that most of their potential buyers are going to be builders. do Not buy land in FLA without doing full due diligence  on all aspects . there are environmental gotchas that you need to fully suss out prior to waiving due diligence

I have tons of connections with people who do marketing all over the city I live in.

Quote from @Alex Grosvenor: There are a ton of people wholesaling out of the DFW area.

Having two people paying rent, but only one living in the house is not ideal unless both understand clearly they are liable. 

That also perhaps makes people more motivated to sell.  4-5 weeks....that's plenty of time to get a deal done.Good luck.

One thing I'm trying to do is to test different cover photos to see which ones draw a greater % of click-thrus (which seems like a reasonable thing to test).I'd like to be able to view the Airbnb stats to see, for each cover photo I test, things like what % of people click through on it.

That's not a guarantee - some of those people may be breaking the law too - but it gives you a good idea where to start. 

It takes time to meet people and get deals.