I’m curious if anyone has actually done this or knows the technical/logistical challenges.

Unfortunately, there were some technical challenges there so it may not have been forwarded! 

But septic systems in WA are challenging. 

Quote from @Kelly Schroeder: The biggest challenges on scaling flipping are quality control with contractors for example getting the vanity light straight and centered with the vanity sink.

Specifically:Operational Challenges:-What day-to-day management issues caught you off guard?

Paul typically range from $300K–$550K, depending on location and condition.Rents: Median rents for 2–3 bedroom units are running $1,500–$2,000/month in many neighborhoods.Financing environment: Interest rates in the 6–7% range mean the mortgage payment is higher, making underwriting tighter but there's less competition so getting a better deal upfront is more feasible.Even with these challenges, house hacking can still work here when the numbers are run carefully.

home needed new roof and causemetics as well as it was technically land locked when we bought it.

Many investors and realtors believe their biggest challenge is knowing the real estate market, keeping up with trends, or having all the answers for their clients.

What strategies worked, and what challenges did you face?

That being said, keeping contractors on-task is the biggest challenge.