The picture they have on Zillow vs one of the several I have with the same view:Your pic is better than the PM's pic, but that pic isn't why your unit hasn't rented. 

One effective strategy to maximize unit potential is to explore opportunities for adding extra units, especially in C-Class properties.

The buyer had the mobile home demolished. 

Now that I am in position, I would like to place a mobile home to generate some passive income, but I don't want to use my savings for the down payment.

Quote from @Fred Scott: Sunrise Capital Investors - Mobile Home Park Investment FundI've seen a few posts about them here but none of them actually talks about what the actual annual returns have been.They are advertising heavily for passive tax deductions which is fine but what are the actual returns over a period of (say) five or ten years?

We have pulled permit for one STR, like air B n B and have furnished one of the units.

It looks to have a very high number of mobile homes for sale.

How much of the 52 units do You own? 

I personally use the mass text capabilities through my Resident RE CRM.However I have a few friends who wholesale and invest and use Mobile Monkey to mass text and from what they say the price is pretty reasonable.

I'm trying to analyze my first property and not sure how to set it up to run the number using the calculator tools here. 2 of the units are successful Airbnb short term rentals, and the other two units are month to month rentals to existing tenants.