Case in point, I bought a house recently for 130k, it appraised as is for 300k.

If the analysis shows the ADU addition is a good investment after fully analyzing all aspect then great, but this will not be the case in many/most markets.

Do they know how to file a case in JP Court for eviction?  

In 1946, the Supreme Court heard a case in which the US Securities and Exchange Commission (SEC) sued the defendants (Howey) over several transactions they had structured, claiming that they broke the law by not filing a securities registration statement.

That just hasn't been the case in a lot of markets.

I'm betting this is likely the case in Houston too. 

Be sure you check the local regulations regarding what you can rent out in what zoning for what time frames, there are restrictions in Vilas and Oneida counties and possibly others, recent state law changes have forced changes to local ordinances, but there are special requirements either in the works or already in place, for the most part in Oneida county you can not rent a property in residential zoning for less than 7 consecutive days unless you have appropriate licensing from the county. this may also be the case in Vilas, prior to state law change it was 30 days, this was to protect resort owners and near by property owners from an owner that wants to run a VRBO weekend packages and have people loud and obnoxious at their lake house all summer.

Seems reasonable unless they have a track record of placing tenants that cannot pay which if you were using the same PM prior seems to be the case.  In

In court they brought up all kinds of things not even true or relevant to the case. In

I know my landlord can’t evict me, but I’m hoping he can get his money by then so I don’t have to waste my time to present my case in court.