You might ask about a backflow preventer on just the tub.

However, at some point, you might get in an accident, or pulled over and found out. 

Quote from @Makan A Tabrizi: Quote from @Marcus Auerbach: We try to get ahead of the issue by preventing it in the first place.

Having a rock solid SOW can prevent many of the issues that arise during any project.

I really like OKC but it has tornados that kind of prevent me from looking further. 

When that same accident happens 6 times in a year it would start to look a little less "accidental".

So even if you pick a state with stronger protections like WY or NV, the cause of action arose in the state where the tenant fell, so likely that the court where the accident happened would have jurisdiction.

If not, there is a legal reason preventing them.

There are no restrictions preventing out-of-state investors from purchasing rental properties in Texas—these investors enjoy the same opportunities as Texas residents.Additionally, the financing restrictions you mentioned don’t align with reality.

Moreover, it allows you to set the terms of the lease agreement according to your preferences, which can help prevent misunderstandings and disputes in the future.