HBU as others have detailed generally a vendor finance style strategy.
Popularised by cough 'real estate guru' 'millionaire maker' Rick Otton.
He is a big advocate of using marker and basic signage at high traffic flow areas to filter in prospects.
Google him, search for him on SS and various vendor finance strategies. Know a few people that have gone down this path/ strategy however don't know anyone that has come out infront. Not to say its impossible just make sure your eyes and ears are open