You will find that lenders will reach out to you and try to ally alongside you (I know I have received a few emails and phone calls from different lenders trying to offer their services) but few are willing to 'teach' you.

Regarding getting started, I recommend finding an STR owner who's overwhelmed or just worn out with managing their property, and perhaps who's also not using a dynamic pricing tool, and then offering to manage it for a very small cost. 

Japanese people culturally like brand new and shiny products and you will have a small market of investors who won't touch unless you offer attractive yields.

Using a large RV or boat for business purposes offers potential tax benefits, but it's essential to navigate IRS regulations carefully.

Variable income is SUPER hard since covid and no real way around that beyond showing an offer letter that states you get a minimum guaranteed hours, and you may need a payroll log to prove you never went below that number. 

Offer to buy them a few indoor portable heaters until you find a solution. 

@Helena Goyvaerts it will be tough without 2+ years of USA tax returns showing you are profitable.Higher interest rates have negatively affected most lenders and many of them are getting more aggressive with offering more flexible programs. 

And probably not a lot of competition.

Fannie Mae offers much more flexibility regarding the types of renovations you can and cannot do.3.

Now granted Google feeds them for free but those coders and tech folks put in some long hours and there is uber competition there is no punching a clock in those type of places..