In my recent listings that attracted flippers one had 4 cash offers one was cash the other 3 where hard money.

At this time, we were able to attract an offer on one of the units, not nearly as high as I would have liked, but still acceptable.

Most of the other groups tend to attract beginners.

I will definitely be in contact soon, what have you found to be the most effective marketing tactic to attract sellers in our area?

They are generally newer builds (usually built within the last 20 years), they come with higher end finishes that attract higher income earning tenants and low vacancy rates.

This attracts a broader variety of potential tenants of which to choose from.

If I dislike students and by extension the fast, yuppie singles, what can I do to attract families?

Why not hire a freelancer or someone on retainer or co-marketing agreement to?

If you're looking to just get rid of the place as soon as possible, then selling as-is at an exceptionally low price to attract a cash buyer (e.g., an investor/rehabber) may be an option to consider.  

Currently freelance and consult with major corporations, start ups and other businesses.