The house's almost an hour north of SF so rather than treating it as a home, we use it more like a permanent motel that we go back to sleep in.

They view it as high risk because they are essentially lending on land (since by the nature of mobile homes - they are not permanent). 

My wife helped some but she is permanently disabled so I knew she couldn’t help much.

After a series of bad tenants, she finally got one that completely trashed the place and she declared she was permanently done with landlording and decided to sell the apartment.We went over there, cleared out the old tenant's junk, and brought in an agent.

This would include anything that's not permanently attached, like appliances. 

The cash value of a permanent life insurance is quite literally you saving up your own death benefit over your natural life expectancy.

When I read the codes website, certain areas are clearly illegal to STR in Treasure Island, for instance, but I've stayed in several in that area and they are fully functioning, operating businesses within condo buildings that contain a mix of permanent residents and STR tenants. 

But you had to be a permanent resident and it was a limited # of days per year.

You can use that to pay cash for the next Buy and Rehab and then refinance to a permanent loan. 

Yes, here banks will provide a construction-perm loan, they fund construction as required, at various stages of the project and when it is completed, that loan is "rolled over" to a new permanent loan.