Are there any additional methods I may have overlooked?

This is not to say this is the only successful method of real estate investing, but as I'm sure you're well aware, with current interest rates and overall market conditions, sourcing and acquiring LTR deals is difficult unless you're going off-market. 

can you share your methods and tools?

That's the simple, proven method that leads to success.

@Alessa LeSarThe BRRRR method is a way to grow a a limited-capital real estate portfolio by buying homes, fixing them up, renting them out, refinancing, and doing it all over again.

I let it dry, then lay down copious amounts of diatomaceous earth into the gaps to discourage bugs.* Day 4: Maintenance responds to my pest control request by spraying a $30 bottle of Walmart roach spray around the house like I couldn't and didn't do that already. * Day 5: I find a live roach on my windowsill the next morning.Currently: One bathroom is taped shut and not working.

After the space is dry, they explained that part of the floor in the bathroom will need to be replaced.

Although it can feel 'old-school' sometimes local buyers prefer traditional marketing methods. 

Depending on your exit strategy you would execute as normal to flip or Refinance after Rehab with the BRRRR Method on this type of a property. 

Using NOAA sea level rise forecast tool, even with a 10 foot increase (over 80 years) the property would be high and dry.