Finding Tenants for Rental Units

I have used a few rental assistance programs with success. I have been working with Section Eight, but I would like to look elsewhere for tenants. Section 8 is great, but I want some options. Another rental subsidized program would be great, I like the guaranteed rents.

Does anyone know of any other program that you have work with successfully? If so, please share them here.

How have you found tenants in general, that has worked for you? Any bright ideas? As investors, we need this information to get the job done whether the market is strong or weak.