Second, I let the tenant know I know their criminal history and tell them to leave.

If an investor has the time, knowledge, capital and experience to be an active property investor then there are a number of strategies , that, depending on the economic market can be used to accelerate wealth building.  

Contact potential sellers who are not actively seeking to sell their real estate holdings.  

However, there's a critical detail that many tax advisors conveniently overlook when promoting these studies.Here's the uncomfortable truth: If you're a high-income earner (AGI > $150,000) and not actively managing your properties, those promised tax savings might be locked away for years.

I retired in 2008 with 21 years in the Air Force.13 sales in your first year is pretty impressive, particularly for someone on active duty.

Take time to learn through military-focused resources like Military House Hacking or Active Duty Passive Income, and connect with other military investors online or on base.

But wouldn't this be criminal not civil?

Once you start processing the credit/criminal, the money is spent, and you can't get it back.

Let's say 10% of them are criminal, with criminal intentions and criminal motives.

Criminal background will weed out some bad actors as well.