Also, how many time should I send the letters to the same recipient?

I'm thinking about purchasing a 6 unit apartment and renting it out to section 8 recipients.

I have only had experience with older, single male HUD Vash recipients holders. 

Avoid all welfare recipients like the plague and make sure your rents will cash flow as with any market.Unlikely SFHs will have positive cash flow.

You're merely letting the recipient know that you are interested in their property and enticing them to contact you for negotiations.

Best guess is that they were in the business for 10 years prior to my work with them, and its hard to say how difficult it was for them to get their first award.Yes, things differ from state to state and for most I believe that the awards are almost always allocated to prior recipients.  

The last deed recipient is the current owner.

I want the recipient of my letter to know who I am in the first paragraph, my credentials and what I have done in the past and what I can do for them.They need to know that I can really solve their real estate situation - that I have more than one solution and that I can deal with them and their property professionally.I use radio to "stand out in a crowded investing market."

How do I collect funds from an individual who is not only a burden on me but the state as well (welfare recipient)?

I see pros and cons to doing it; it can help the recipient know exactly which property I am seeking out, but if the person owns multiple pieces of property then they might be open to selling another property and not the one I am specifically speaking about so they won't call at all.Thoughts?