For all methods you would want to find a market that has strong employment rates, strong income rates for the market, and is a growing or an established market. 

It's likely a scam anytime they sound like AI or the grammar is weird or they use the word "kindly", if they ask for you to respond to them off-platform, if they say their employer will pay for it, if they ask if the dates they've specified are still open (when they can clearly see they are open on your calendar), if they ask for a video of your property (they probably want to set up a duplicate listing with your photos and video and scam others out of money), or if they want a long term booking and they have just joined the platform and have no reviews (could have been evicted from somewhere else, and hope a newbie will let them in with no background check, they'll end up not paying or credit card is bad).  

I think that strategy works best in higher areas or mid term rentals near major employers.  

Quote from @Anthony Sigala: Is there any way to get around the 1 year employment history requirement for FHA loans?

Use umbrella insurance as an additional safeguard, especially if you opt not to form an LLC.Avoid S-Corp taxation for rentals, as rental income is passive and not subject to self-employment tax.

Economic growth means higher household incomes, better employment rates, and stronger consumer confidence, all of which directly fuel demand for real estate.

I've been self-employed for only 6 months, and loans are proving difficult to come by despite my great credit (not to brag, I'm moreso frustrated and seeking help).

From my understanding, no one is employed, they are somehow current with the rent, but they are definitely not someone I would offer a new lease...not even at market rate.  

The worst PM imitation I ever had the misfortune of employing

Most (not all) HELOCs require that the property is titled to an individual (not LLC) and are full doc, meaning your employment history, income, DTI etc will be factors.