So, IMHO, Step 1: If applicable, speak to park management or land owner to see if they accept landlords.

Planning to move forward with his application.

We still take an application fee and perform regular screening (credit/background/reference/employment checks) but our expectations are most will have little to no credit history.

Make sure you get their payment deposited the day it is received, a late payment within 12 months of an application can disqualify them especially with past credit issues.

It shall be non-refundable upon execution and assignment (if applicable) of this contract, and will be deducted from the purchase price.(17)INCLUDED IN THE PURCHASE:The property shall also include all land, together with all improvements thereon, all appurtenance rights, privileges, easements, buildings, fixtures, heating, electrical, plumbing and air conditioning fixtures and facilities, window shades, Venetian blinds, awnings, curtain rods, screens, storm windows and doors, affixed mirrors, wall to wall carpeting, stair carpeting, built in kitchen appliances, bathroom fixtures, radio and television aerials, landscaping and shrubbery, water softeners, garage door openers, and operating devices, and all utility or storage buildings or sheds.

I'm not really sure on the Kiwi preference laws just as I suppose you aren't aware of US visa issues etc.

So far we are on track to do so WITHOUT the additional investment and with the only debt being 28k split between a Visa Card and a Business LOC (mostly going to support an aggressive rehab schedule).  

They do understand the process would involve (if they continue to reside in the rental unit) applicants walking through to view the place.Security deposits would be used to pay rent if the unit is abandoned.

Pulling credit, applications etc? 

So I have been finishing up this excellent book on behavioural economics called 'Predictably Irrational' and I highly recommend it if you haven't read it yet as I believe it to have excellent application to investors!