I'm curious to know how often property managers actively suggest value-add activities for properties (ie, building an ADU, remodeling, buy-fix-hold opportunities etc etc). 

They are basically the same as applicant number one except there is an opportunity for them to make more money with the second person if they chose to work which means higher probability you will get paid on time. 

You should get these things for all applicants:1. rental application with employment reference and personal reference2. credit3. past landlord reference4. check for eviction historyMost apps like RentSpree include all this in what the tenant pays to send you a report.I cosigned for my daughter and her boyfriend on their first lease.

Since your a hands on person and have contractor contacts.  

The barrier to entry is lower so they seem attractive, and to the person who knows what they are doing, they can be very profitable.

Hire a company/person that is solely a QI like @Dave Foster they do it every day and will keep you legal and on track. 

Personally, I've been in the mobile home investing niche since 2007.

It should go away.If it's only them smoking and a personal issue, I would reconsider dropping this if they are otherwise good tenants.

This is my first time and I'm buying a fixer upper that needs a new compressor, roof and a total kitchen remodel.

However, I also have ways for them to pay with cash, card, money order, cashiers check, and personal check.