Do you think we can have a separate contract between partners committing each of us to each loan even if the loan is on one partner's name?

I have spoken to @Jerry Padilla a bunch of times through BP and he seems to have a lot of business through online lending since that seems to be very prevalent as you stated above. 

If you want them to work with you, give them confidence that you are serious and committed (i.e. not a time-waster).  

You don't want to commit to living with someone that isn't a good fit.

Yes, there is a residency requirement for most of the low down payment mortgages, and it is unwise to commit mortgage fraud!!

It's important to me to give all clients the same attention, whether they are purchasing a small residential property or a $500,000,000 commercial portfolio, and the time commitment to properly address personal home purchaser's or seller's needs just doesn't allow me to do that, so I'd rather not take them at all.

Will absolutely keep in mind the potential benefit of not committing as the fallback buyer!

Every lender differs in the paperwork arena but all want a personal guarantee, mortgage, note, title commitment, and other miscellaneous items.Call me if you have other questions and I will try to answer as best as I can.

In short, we were doing weekend rentals throughout the summer, but couldn't really get anyone to commit to a week at a time (which is what we really needed to get the numbers to work).

Good to see you DON'T want to commit mortgage fraud - which not living there would be.Aah, the impatience of youth.