Stealth for private property caches - is it warranted or even wise?

I found this post interesting and thought provoking.  When it comes to lamp post caches in parking lots or parking garage caches or caches on store/office property. is it better to not be stealthy or sneaky?:

ZeLonewolf

Post #29

(wimseyguy @ Aug 5 2010) Owners who demand stealth from seekers are misguided. If I am confronted by security or law enforcement, I will simply stop what I am doing and explain it to them. I have every right to expect that you do have permission to place this cache there, and will share that with security. If they are not aware that the cache is placed with permission, and they remove it thinking it is a suspicious object, that becomes your problem, not mine. I'm off to find the next cache. PS-My Slogan=caching since 2002/plenty of honest conversations with security and LEO's I agree with this completely! I make no attempts to be stealthy, I just walk up to GZ and start searching. If somebody sees me retrieving and removing the cache, it's not my problem -- it's the COs problem for putting it somewhere inappropriate. In these terrorism-crazed times, the LAST thing I want to do is to act "stealthy" or "sneaky" while removing/replacing a small container in a public place. If a cop pulls up while I'm searching, I keep searching until he walks up to me an addresses me. I'm not doing anything wrong or illegal, however, if I'm acting "sneaky" or "stealthy", than it sure looks like I'm doing something wrong or illegal which is why I refuse to do it.

Thanks to a geocacher, I found an old unpublished letterbox

A new cache was planted in a local park just a few days ago.

The coords were fuzzy, about 30 feet off, so a wide circle of searching occurred. Someone posted finding a letterbox in one of the trees, something to do with the Wizard of Oz. Ooooooo, if my hunch was correct it had to be unpublished and planted many years ago by letterboxers who are not active anymore.

I headed out today and there was the tell tale container that these boxers had used when they planted. The box may have been out there for 6 years. The tree had grown some and the hole it was in was tightening around it. Took me about 5 minutes of finagling before I found just the right spot that it would fit through to extricate it.

When I opened the box I was pleasantly surprised to find that the contents were in very good shape. I opened the logbook to find that the very first log was from a tree lover who stumbled upon it when exploring the hollow. See the photos above. He called the discovery an 'unexpected delight'.

....As I'm writing this, I just got an email from the cacher that reported finding the letterbox. He too had a tough time getting the box out and he actually found it in poor shape. Had to pour out water and wipe/dry out the cache. He did a great job. The logbook was damp but not wet. The container is a dollar store container, not water tight. If the owners will let me help out I'll have to see if I can find something small, thin and watertight. Ideally it should be about the size of an altoids tin.

What an interesting find. I hope it can be salvaged and shared with more letterboxers. I emailed the owners and await their reply.