MTR in Florida is hot due to traveling nurses, corporate remote work and other.As far as vacant land goes Modular homes are taking a huge step into the REI market with some upgraded luxury home styles. 

Never used that rules nor any rules set by the gurus and somehow build up a portfolio that allowed my to exit the corporate world.I find those rules are an obstacles for my clients and slow them down from achieving their dreams.Its better to come up with your own rules based on your personal goals & strategy.

I'm not sure what part of FL you're in and what properties cost there but could you buy something locally and rent it out or do MTR or STR (to traveling nurses or corporate professionals and/or people vacationing)?

If they have a 2 or 3 month period for a down season and it is hard to get a short term renter how easy is it to turn your place into a corporate rental for a few months. 

Buy NNN with corporate guarantees then.

I assume you mean the Corporate Transparency Act.

I think you are really asking about the corporate level accounting. 

What some people do is create a corporation then pay themselves salary from the proceeds of the rental income.

There is institution fund outthere that can give minimal-risk 10% cashflow by buying corporate bonds and hedge it by shorting the underlying.

A huge percent of landlords are big corporations with lobbyists.