This is a great question, and I'm eager to hear some others tips as well. In my experience in Iowa, we typically let it go after obtaining a money judgment and assigning it to a collections agency. From what I've gathered, many landlords face the challenge of not seeing the money, but having these two actions in place increases the likelihood that a tenant might settle the debt down the line.
There have been instances where tenants, even with judgments from three years ago, walked into the office and paid off a $1200 debt when they needed to clean up their financials for a new rental or other purposes. Realistically, you won't see any money, and the collections agency often takes a significant cut anyway.
If anyone else has valuable tips on this, I'd love to learn more. Dealing with collections agencies has left me somewhat disappointed, and it makes me wonder about the effort they put in and if there is anything the investor / management company can do to actually see this money.