And for the implementation and testing of these, have people tried to change over in the course of a month or picked a reliable tenant as a tester or something in between?

There are DTI and underwriting challenges of course, but do the best you can in keeping loans in only ONE person's name. 

They immediately believe they’ve been defrauded, which of course MAY be true as a lot of these investment deals are scams from day one.  

of course!

Depends on the market of course.

the bathroom tile is too old", etc.I was the only person crawling under the house, going in the attic, looking in the Main panel.....everyone looked at me like I was nuts.So of course I bid it way higher than anyone else and did not get it.

I hire a specialist to come in and deep clean for an entire day 4 times a year. 

I always recommend you do some google reviews and BBB reviews on any training program first to see what they say as well as BP reviews.As it relates to note training as a whole - I can pretty much tell everyone there is not a notes training course out there that will get you flipping notes.

An agent has a fiduciary duty to protect your best interests, which include protection from the many different liabilities that can pop up during the course of a transaction.

Of course you'll make more doing things yourself but it'll take more of that time and effort.