So it's possible that the assignee might decide to cut his losses and forfeit the fee amount he already paid in.Regardless of why this might happen (which is really immaterial), the questions I should have asked are:How frequently (percentage of a wholesaler's deals) does it happen that a buyer backs out of the assignment, andWhen it does, how successful are you in pursuing the alternatives mentioned in Dustin Heiner's article?

Medium term rentals would be the safer option in my opinion due to the uncertainty that comes with STR's, your cashflow would be lower but overtime it would turn into a solid source of passive income.

Alternatively, this can be sent to collections (creditor transferring the responsibility of collecting debt to a third-party agency). 

That would be a very good alternative to multifamily. 

Anyone else invested with their Fidelity IRA into an alternative investment recently that I can look into the fund to see if it might be right for myself?

You can also do other alternative investments such as, private lending, private placements and many other things.

I don't actually know anything about the towns south of Orlando and not on the coast, I'm just giving another alternative to the other ones suggested. 

Alternatively, you could suggest an owner financing transaction where they become the bank on the property and this way they get to collect a monthly payment all while getting a chunk of cash up front (your down payment). 

While yes the shares are private, it also protects them from larger funds shorting the company if it were public to drive the price down (which is why many list on alternative exchanges that do not allow for shorting). 

Alternatively, I can look into househacking in my neighborhood, but everything is kind of expensive here and I don't have any dilapidated homes to renovate.