However judging all park owners by these few is an unfair and short-sighted comparison.

Helps me keep in sight what's important, and be honest with myself about both goals as well as fears and emotions.

HOWEVER, some of the same principles do apply to investing. 

Not a single one in sight.#2.

Personally I have moved my sights elsewhere for my next investment because of the high RE prices.

I think it can help you too even if you are not interested in apartments initially there are really good principles and tips in that book! 

They also use a special website with a special algorithm that scans sights like Airbnb and VRBO looking for listings that do not have the proper permits.

In other words, front load the interest, to where the amount paid at the end is their paying off the principle, with mostly just interest being paid to you while the payments are rolling in (paying for your risk).  

However, for my next property, I really want to be able to apply the BRRR principles.

This way it's out-of-sight out-of-mind and my employees don't have to track it as you alluded to.