I have a colleague that rented his MTR to a traveling physical therapist and another friend who was contacted by an insurance agent to rent out their MTR to a family displaced because their house burnt down.

Are these physical forms of advertisement still effective or is there a better method of reaching the masses?

Sometimes 2-3X longer than a traditional residential acquisition/sale- Less control of the property/asset-- you do not own the physical RE.

But do keep a physical key in the lockbox as a backup.

I made $100k buying two lots sight unseen and selling them and never physically went to those properties lol.  

Since there is built up interest via equity build up and [possible] physical improvements of the property, although technically one can simply evict the tenant, for all practical purposes a judge might consider the tenant-buyer's interest in the property and require a foreclosure instead of a simple eviction.

Risk of economic changes in your area, Physical risks of loss, insured coverage.

Make sure the person that you ask to do this: *pays on time, no late payments in their history*does not use more than 30% of the available credit on that card*has had the account for several years*is willing to list you as an authorized user, and will not give you a physical card3.

Generally speaking an employee physically located within a state may create filing nexus for operating businesses.Rental RE may be different.You're never forced to incorporate anywhere, however there are specific circumstances in which you should register with a state's Secretary of State to conduct business within the state.

My complex consists of 7 individual buildings each with a different physical and legal address and consists of 6 different parcels, so your idea seems possible.