Now I use a class A hitch, two lock nuts threaded with safety wire, it's not going anywhere!

Whenever we present a deal we have it locked down and under contract with our company or we already own it.

I hired a property preservation company to do a lock change and photos.

If I got an ARM 2 years ago and it was locked for 3 and interest rates went up over that next year, what happens after year 3?

Property preservation companies will "secure" the property (board up and lock any kind of access, winterize if necessary, maintain the lawn, tarp a leaking roof etc...) and check it every so often for damage/vandalism. 

They'd be about 8x6', big closets essentially with a light, door w/ lock, etc.

ONe to not rely on someone giving you information.. two  lock box key ( its not literally a key anymore I date myself).. and if you can't make a deal but strike up a good reporte' you simply take a listing.. 

I have recently purchased a shopping plaza back in November, and I’m trying to get all my tenants all locked up.

If it is vacant, they have the right in the mortgage documents to "secure and preserve the property", which typically includes installing a new lock,securing/boarding/locking Windows, and performing monthly inspections.  

If he did, they would lock and load with him, and not call you.So, personally I think you have leverage on them.