Am interested in alternative methods to bridge finance between two properties each of which have LTV below 80% 

As to how to find those desperate sellers....well, there are many methods (see Kate's post above for some), you just need to find what works best for you.

I was able to owner finance and my favorite method was low down say a few grand.. and ZERO % interest carry with higher than normal payments but enough that the buyer could break even on cash flow if they managed them themselves...

Did the sponsor receive equity ownership in the property, or did you employ a different method to compensate the sponsor for his/her support in the deal?

@Brie Schmidt has a great method for incentivizing the PM so their goals are aligned with the owner's.

I also had a full time job until a couple of years ago, but I was self employed so I had more flexibility with my schedule.  

Any employing brokers here in Colorado she could hang her license under?   

When we purchased their loan just over a year ago, they were fully employed and we gladly worked with them to modify their loan so they could keep their home.

This limits your income tax liability and reduces your FICA ("self employment" tax) expense.There is a two-day (two 8-hour days, recorded) tax and legal class in the education to which I am connected.

I have used that method several times.