Most of what I mentioned are questionable tactics.

You can also keep your finger on the pulse and change your marketing tactics, adjust pricing and make all kinds of business decisions that you may not be able to do as well or as quickly if you are not involved on a daily basis.For me, this decision would boil down to opportunity cost and personal preference.

This was over a year later at this point because of his stall tactics, and I just gave up.

Sounds like more stall tactics to me!  

. :-)I don't like scare tactics that send people running to lawyers, when it's not necessary. 

Bringing three people into your home that are already friends will make it very difficult to get rid of the one that does not work out.You will be overpowered and bullied by the group and they will ultimately take control of the environment.

We will people with foreclosures that went a short period of time (6 - 9 months) if they have a clean credit report for the past 2 years.We will never take tenants with any evictions or if they ever forced a prolonged foreclosure as 1) They have tasted what it is like to live rent/mortgage free and they just might like the taste of that  2) They probably know all of the loopholes and stall tactics in the book as well as every obscure right they have.Pass on them.

Here are a few other NOI increasing tactics that haven't been mentioned:- Charge for parking- Charge for late fees- Charge for application fees- Charge more for more desirable units (e.g. 3rd floor vs. 1st floor)- Reduce electric bill with motion sensor lights- Seek triple bids for vendor costs- Reduce maintenance costs by replacing all light bulbs with high-efficiency bulbs- Charge a move-in / cleaning fee - Contest your tax bills@Douglass Benson @Bill Thompson @Gino Barbaro Have all listed some really good ideas. 

That just seems like a scare tactic to get a lot of insurance sold, that is unnecessary. 

Give him proper notice that his lease will not be renewed.Your owner and you can get nailed for collection tactics.