The primary form of diligence we see on the forums is "what do you think of XYZ sponsor and deal" whereas the common form of diligence in the space by institutional investors, large investment groups, family offices, and sophisticated investors involves following the sponsor for years, underwriting the deals, validating rent comps, background checks on the general partners, and a host of other diligence that materially de-risks the investments.  

I also suggest you look at co-hosting instead of arbitrage.

As a foreigner it is recommended to buy tru a bank trust https://www.tulumrealty.net/Buying_In_Mexico/page_2481994.html, 

What makes it slow in this case is that you don't really start seeing real cash flow until after year five but it's more effective than rentals in that there is little to no maintenance.Sure you can live in a home while fixing it up with the intention of selling it for a nice profit later but I think many people are already doing that and the buyers of slow flips now also have that opportunity without having to qualify with a bank.

So it is really looking more at bank deposits, but most mom and pop owners won't share bank statements.  

For a traditional Heloc at most small banks/CU's, the rate will be variable and will be WSJ Prime + a spread that represents the borrower's credit risk.

Make sure you have enough saved up not only for the down payment but also closing cost, plus some reserve in bank accounts or in other investment accounts!

The best HELOC usually comes from the bank where you have the most money or the one you have the best relationship with.

Welcome to the world of bank loans!

What do you think you're doing differently than other hosts that is setting you apart?