We've also advised this method to our investor clients that borrow from us.

Definitely do more research on the BRRRR method as that sounds like what you're trying to do.

Always interested in alternative financing as it is the easiest way to cash flow at high LTV in markets with good historical appreciation.

@Matthew SamsonThe easiest way to avoid the taxes is not to sell it.  

House hacking is the best tried-and-true method for new investors in my opinion.

I hope to find a single-family home with at least 4 bedrooms, use the BRRR method to turn it into a short-term rental property.

This is the simplest method, but it also means your tenants are more likely to abuse the utilities by leaving windows open with the heat or A/C running, leaving lights on, ignoring the toilet that constantly flushes on its own, etc.3.

I think a heloc is a solid method to fund a flip.

Creating an LLC and getting insurance on rental are two methods of "Asset Protection" that most real estate investors use to protect themselves and their assets. 

I'd send out 500 at a time, using a different mailer/method weekly.