I actually called the office for a state park about any rules with metal detecting and they didn’t have a problem with it. As long as I filled back the holes as to not making a walking hazard. Pays to ask.
Hey there TB8788, Some observations about this :
1) At first blush, anytime a "yes" comes forth, then naturally, the conclusion seems to be : "See, it was a good thing I asked". Also, if the answer had been "no", then likewise the same conclusion follows: "See, it was a good thing I asked."
So you can see that whether the answer was "yes", or "no", EITHER reply concludes with "See, it pays to ask". Eh ? And never does anyone in authority answer in the following way:
"Gee, that's a funny question. Why would you need my permission or verdict ? " Of course they don't answer in that fashion. Instead they bestow on you their princely "yes" or "no". Eh ?
2) In your particular case here, if your "yes" stands-up-to-scrutiny (Ie.: assuming that person wasn't in error), then : You didn't need his say-so in the first place. It merely means it wasn't disallowed. So getting a person's verbal say-so isn't what made it acceptable or allowed.
3) The reason I say "stands up to scrutiny" is: Believe it or not, there has been ample stories of persons who did what you did, and .... got a "yes". But the following odd stories have ensued:
3a) Someone else comes along and tries to "scram" them. The md'r proudly whips out his name-to-drop or permission. The griper then over-rides that, with stern admonishments that you didn't explain that you were going to take things, dig holes, etc... And/or that the office person wasn't high-ranking enough, and gave you the wrong info. Ie.: your "permission" is promptly revoked.
3b) Or another person goes into that EXACT SAME OFFICE on another day, talks to another person, and gets a "no". Because perhaps person #2 was envisioning "holes". Or person #2 was of an archaeological mindset, and envisioned (gasp) someone finding something old.
In other words, I can walk into that same exact office, on a different day, and get an entirely different answer. I have seen this happen before, and can give a very humorous example of it from my area. But for sure: Congrat's on your success in Russian Roulette. For me, I would just check the rules.
If you (or ... ahem ...others on the thread) consider anything "ambiguous" to mean: Don't go without an express "yes", then : Just be prepared for Russian Roulette. And the "no one cared till you asked" potential. Worse yet, the potential of making the FAQ into a official stance (ie.: presto, a law is born).