I am working with general contractor who has concluded it will need to be demolished.In addition, we have tested the home for lead paint, and it’s positive.

That is the most popular list.Find a list broker that can suggest alternative off-market leads.

We knew there had to be a way to not turn away so many leads and did lots of research and broke the code to creative financing.

The cool thing is most of the time there is an alternative exit strategy that will still lead to profitability in the long run. 

Which (sorry for the long-windedness) leads to my final, more philosophical point - landlords are not a loved minority.

Other than contacting former guests, posting on Craigslist and social media (which has only given me leads that don't turn into bookings), what should I do to help get these months booked up?

We always try to clarify deals where we are the lead vs. deals where we are General Partners and aiding in the roles of market research, marketing, and bringing our investors into the deal.

Can anyone give me advice on how I can generate more leads with the free time I have?

You can send your leads to cash buyers directly as well as wholesalers

Also, trying to achieve goals like that can lead to poor decisions/bad investments.