How can you get into trouble if you obey the approved flight manuals instructions.
That is the very least of One's problems in reality.
Worrying about Land Owner's Permission is sheer stupidity.
When you realize the weather is deteriorating.....or the aircraft is acting up in a dangerous manner.....or if the situation is beginning to exceed your capabilities....personal limitations.....and parking the birdie is the exact right way to stay alive and unhurt.....PARK THE DAMN THING!
If you are Alive, Un-hurt, and the Aircraft undamaged......who gives a stuff what the CAA/FAA, other Pilots, your Pax, or your Boss thinks......compared to NOT Landing and becoming yet another dreary statistic that shows you killing yourself for the same old worn out reasons.
Get a grip folks.....sometimes....it just makes good sense to find a place to park the helicopter, find a Pub, have a Pint....and admit you are not the Sky God you think you are!