Require payment by ACH/auto-debit and schedule it to hit on the due date when their account should have money in it, assuming they aren't overdrawn by more than their pay check.Step 3: Offer alternative payment arrangements. 

I will arrange location, date and time, food, fliers, etc.

So, writing is better than phone calls, as people often forget conversations; but for those times when phone calls are more practical, then follow up with a confirmation e-mail describing the conversation and defining any agreement you may have arranged during the conversation. 

Find an experienced local investor, figure out where he/she needs help in their business, propose a mutually beneficial arrangement where you solve their problem (for free) and in exchange learn from them.

If the free labor provided by your tenant is also worth $6000, then this arrangement would improve your property $12,000/yr. 

@Mike MillerI second @Natalie Kolodij: a true lease-to-own arrangement is still a rental property.

Presumably you want to continue selling homes within the same park so you should put a large focus into creating an arrangement that not only works for you but also benefits the park owners so they'll be excited the next time you want to place a home in their park.

Something sounds fishy with the PM arrangement.

The way the arrangement works is:  1)  The business owner researches properties at auction and selects properties which can be turned for a profit.  2)  There are a pool of investors who have money available for purchasing the properties from auction and cover the renovation costs.  3)  My friend (from church), reviews the property and gives an estimate for the renovation and one of his crews completes the renovation on the property.  4)  The business owner then sells the property and returns 10% return on the investors funds used. 

That is assuming your doing a true deed/mortgage arrangement .