The idea of payroll tax cut or permanently get rid of payroll tax has nothing to do with giving the little men a bit of boost in their ability to pay bills - but has everything to do with some people's dream of getting rid of social security for good.No political judgement here, all I caution is that be aware of what you are wish for. 

To date I have not received his judgement. 

You really have to take the whole picture into consideration and make a judgement call.

That could easily amount to 5 months rent,  plus you have the inconvenience and uncertainty of not knowing where you are going to be living and the consequences of a bad tenant reference and maybe an unpaid judgement against you. 

I would also put an addendum in their lease stating they're responsible for any costs you incur due to their trespassing (lawyer fees, judgement amounts, etc).Also, consider getting a camera that aims toward the parking lot so you can see if they're trespassing when accused (you could get a wi-fi enabled camera and put it in the apartment of a tenant who is not trespassing).Finally, I would tell the other landlord the things you're doing in an attempt to stop the trespassing from happening.

You need to go to court to get a judgement against them for the amount they owe you.

I have a general idea of where the worst areas are but in the end I'll just make sure who I partner with is comfortable with the deal and trust their judgement as far as the area.  

While "overspend" is usually a subjective judgement, many people who make the choice to invest find that they get their money back on the first deal or two.Put it this way: if spending $x on a course of classes keeps you from making a $x mistake or a 2($x) mistake, did you make money, lose money or break even?

The other benefit is you get a judgement for rent owed, which is the first step in collecting money.If you do "cash for keys" you get no legal rights of removal.

If the owner of the property is the LLC, and the only asset the LLC has is the one house, then the most you stand to loose is the house (in the event there is a judgement against the LLC).