I think the biggest roadblock has been the lack of true testimonials of successful people in these programs.  

Like "Biggest single family propetry management mistakes ever" etc

One of the biggest issues is probably borrower default—whether due to mismanagement, market downturns, or unforeseen circumstances, lenders can end up in long, costly recovery processes.

You can invest OOS but the biggest thing is working with an investor friendly agent.

That alone was the biggest improvement for my business practices and allowed me to take all of my bookkeeping in-house and eliminate the expense I was shelling out for a bookkeeper.

Those are the biggest expense.  

@Emeka Okeke, the biggest thing is actually doing it.  

I wanted to work with someone who was going to pick up the phone when I called.From your first interaction with a broker/seller, show through your words and actions that you are honest and reliable.Lesson 4️⃣ - Buyers and sellers become business partners.I truly think one of the biggest oversights in due diligence is the seller themselves.

It means your house might be your biggest financial asset — and it could open up some exciting opportunities for your future.

My biggest hurdle is we are going to buy 600-800 properties this year and I want to be the #1 buyer.