One tactic that is my favorite is making loans out of my SIDRA.

This is the swap till you drop method. 

What we've done is use the BRRRR (Buy, Rehab, Rent, Refinance, Repeat) method.

By approaching from the "objective analysis" rather than "who is the good and bad guy", you are really educating a basic investor.Capital call is a myth/method created by the lender as a temporary measure by the lender to avoid foreclosure.Nonetheless, these capital call is created because the lender itself is willing to take a such very high risk investment that should not happen in the first place.A DSCR loan of 0.85 80% LTV should not happen in the first place.

It will no doubt make you more focused, more hungry and more methodical when dealing with real estate in the future.  

Does anyone have a software or method of getting deals that have been on market 180+ days?

It was one of my favorite investments of all time.

I'm looking to shift my focus from the long game of rental appreciation to the BRRR method.

Use the wholesale method of buying in a down market to amplify results.  

Others specialize in buying rentals using traditional 20% down methods.