You are right most leveraged ETFs have daily rebalances to maintain equal leverage over the intended investment time-frame, but that doesn't really have any effect on what the value of the ETF is, it's simply adding exposure (or debt) when NAV increases and reducing exposure when it decreases.

And yes, you can engage an attorney to petition the court thereby reducing the second 3 yr period.  

Single family you have to wait for the neighborhood to appreciate and value to build equity, Where as in multifamily if you can increase your income and or reduce your expenses you increase your net operating income (NOI) which increases the value of the property.

.: reducing the loan amount to below 417K, that is one thing.  

@Mike Lukach Yeah, triplexes and quads are ideal but, the right duplex deal could still be a winner for you if you buy it for the right price, in the right area, and use it as a means to reduce your expenses to continue saving.

I just got off the phone with my internet provider and reduced my internet bill from $75.72 a month to $30.93 a month for 15 minutes worth of work (10 minute hold time)!!

Refinancing Your Mortgage: When It Makes SenseImportant considerations for when refinancing is a good financial move.Refinancing your mortgage can offer a way to take advantage of low interest rates -- or, if your mortgage payments have become oppressive, an escape from adjusting rates, increased payments, or reduced income.

That reduces the crowd by at least half.

Offer reduced rent to evacuees, or something?

My thought would be if you plan to hold for that long and have reduced cash flow for that long it makes sense.