Lenders see all, including how little margin some flippers are operating on.  

Turn-key operators, etc. 

I have seen several offers from operators around the country who are offering interest rates of sub 6% for a 30-year fixed mortgage with a 20% down payment required, NO POINTS.

Quote from @Chris Mason: They have simulators for heavy equipment operators: bulldozer, backhoe, etc.

Also, in general, I wouldn't solely rely on a single source, rather: 1) collect feedback from various sources, 2) decide which components are the most critical for you personally, 3) weigh in on the pros and cons, 4) speak with all of the operators to add to the list of pros and cons, 5) and only then make an informed decision. 

You're operating under the assumption that none of your P2P borrowers default or are late on their payments.

You must keep the tenants security deposit at a bank that physically operates a branch office in the State of NC.  

For the experienced cohosts in the group, I’d love to get your thoughts on payment processing options for cohosting companies (LLCs) that position themselves as property management companies but operate without a broker’s license.As an investor and soon-to-be STR entrepreneur, my business will initially focus on managing a small portfolio of vacation rentals with plans to scale. 

All in, I think a large amount of GC's in the residential world tend to operate in less professional manners, which results in a lot of the problems we have read and seen above.

Some grow too fast and discover they've built a full-time job for themselves.Growth can also include improving cash flow, increasing property value, or optimizing operations.