That really isn't good enough in our opinion.Another option for you is if your property is in a realtively safe area, to install a wi-fi connected smart lock.

Cash for keys is a good option but it depends how much they owe.

For larger properties, entertainment options like game rooms or arcade games are often a hit.

With the newer 5% down conventional loan for owner-occupied multifamily option, I generally advise people to start analyzing from there if they want to house hack a multifamily with minimal down.  

I think there’s some sort of option of to do a little refi on both house 1 and 2 and get the money needed to wipe out the line of credit(allowing for bigger flip opportunities, especially if I partner up with someone) and also renovating that garage space with the private investor as long as it is under 1000/month.

If not, they may want to speak to a mortgage broker local here in Florida to help expand their options! 

i'm expanding my buy and hold strategy now to get my foot wet on trying rehab, and would like to work with reliable wholesalers who can provide the source. 

Quote from @Sarah Kensinger: Reach out to @Jeff Chisum and see what options you may have for this property. 

The real life experience is the best option for learning and gaining the knowledge you need. 

That is an easy list to build and a much better and safer option than more creative like Sub To.