I have a very fluid schedule as I own my own business and have thankfully racked up 2 million + miles on my Amex.

The guys that pulled up in BMWs would have you check the oil, coolant, PS fluid, brake fluid, air in the tires, clean the windshield, then sneer at you as they paid their $10 gas charge.

I would say my tenants have rented mainly to remain "fluid."

You could get the metal corner beads to rust from water vapor transmission thru the slab on grade.

What if your transmission goes out ($3000)?

I think i like the idea of the BRRRR method best but i can be fluid with how things happen.  

you just need and equity partner... then you two strike whatever deal suits the both of you.these things are fluid  not set in stone and each has their own deal structure.. its the fun part of real estate.however the first lien holder may require your equity partner to go on the loan with you.they may not accept a 80  10 and 10 deal.... in the old days it was perfectly fine.. but now not sure@Chris Mason  is there 80  10 an 10 product out there are these being done in the investor arena

They stockpile the cash keeping a return going but in fluid investments.

Now also bare in mind the market which loans trade in, the secondary, is a fluid and open and active market.  

We are trying to reduce sound transmission between our ground floor and the second unit apartment, both of which are completely finished.