-My friend talked to the tenant about the tenant giving pets non-pet food without the owner's permission; as a result the tenant physically threatened and intimidated my friend.

Find a good tenantPeople who are house hacking and being landlords for the first time should take care to understand the state landlord-tenant laws and the Fair Housing Act to avoid breaking the law or discriminating against a tenant.When the space is ready to be rented, these are the general steps investors follow to screen tenants:Determine minimum tenant criteria, such credit score or income-to-rent ratioPre-screen tenants by discussing requirements such as the monthly rent, security deposit, rental application fee, and background check up frontGather and review applications from prospective tenants and get permission to run a credit report, conduct a background check, and contact current and previous employers and landlords to verify tenant informationDecide on the best tenant and sign a lease agreementAll the best!

I have permission to drain water from the property into the lake, but they need to go through a county road with an 18" concrete culvert pipe and install drainage ditches around the property.

I wonder if making rent due 5 days before the first of the month would be permissible.

Your loophole should it be needed may be if you screen for credit history / credit score and no result is returned due to lack of SSN,  or if they gave a totally bogus SSN or one belonging to someone else.I recently had a somewhat similar issue -  I have a pair of roommates in a 2br in seattle,   one of them was getting married and moved out,    and they asked permission to swap that party with his father on the lease.   

This park only allowed owner occupants so we had to get permission in advance

Should I have them sign something that gives their permission to proceed?

A lady renter of 4yrs brought in a cat without my permission (triplex) knowing she couldn't.

Anyways i wouldn't say it is I do it myself and as long as you have permission from the investor to rep them?

If there is a potential timing opportunity or tax arbitrage such as in your example, then you could convert based on whatever is permissible under your 401k plan.