I have been very fortunate and have had really good long term renters in all of them and software has not been needed. 

Fortunately, I'm used to living in places with high prices.

Seek fortune. 

I was very fortunate because this is a high demand town because of its proximity to NYC. prices are constantly rising here so im a bit scared to sell it off

Un/fortunately he purposely damaged property and now I can evict him for that reason which hopefully puts the case higher up in the backlog.

Fortunately, we do.

Fortunately/Unfortunately I wasn't the only one who saw the value in the duplex I made an offer on, and I was out-bid.

Fortunately, the park of interest has already checked off several of the boxes you've mentioned: lot rents are well below double nearby apartment rents, vacancy in the zip code (<2%) and county (<5%) are strong, and nearby parks have comparable to much higher lot rents.

Fortunately I usually give 6 month leases before extending for a longer term just to make sure that we are both mutually happy with the living situation.

Fortunately, I had a lien on the property because they had taken a HML from me.