FAA rules are remarkably relaxed in suprising ways... As long as you don't endanger any non-involved people or structures, or violate the airspace rules, the FAA is quite willing to let pilots do almost anything they want.
The basic rule is 500 ft from structures and people, and don't endanger anyone. Other than that, it's almost anything goes when in uncontrolled airspace. That said, the determination of what is dangerous is entirely up to whatever FAA investigator looks into any complaints or alleged violations, so if you get a pompous jerkwad FAA goon in your business, you're screwed.
Like one FAA inspector who went on a rampage at an airport back in the early 1990s... He got a bug up his butt and grounded every plane on one airport ramp, yanked numerous licenses, revoked A&P certificates, you name it he did it. His justification was that everyone was involved in flying aircraft with damaged propellors.
Well, it was a company that sold custom props with "bent" tips specifically designed to increase efficiency, and they were totally legal and FAA approved. But it took a LONG time before complaints about this FAA inspector's actions got up through the FAA administrative red tape before they even looked into it, and it took even longer to un-do the damage he'd caused. If I recall correctly, the company never did recover the lost income revenue due to this guy.
Lots of FAA inspector horror stories, but they're pretty much all individuals doing this stuff. All by yourself outside of controlled airspace, if nobody complains then the FAA probably won't even bother to check. The burden is almost entirely on the pilot to not do anything stupid.