I realize this topic has not been visited for a while, but I just had to add my 2cents to it. Personally, I think that placing a cache should be completely without restrictions. I believe that when you are caching. not placing, that you should have restrictions. Simply put......the cacher is not allowed to dig and make holes in search of caches, but the placer of the cache has to make the cache accessible to the cacher without the said cacher having to use any tools for digging and such. This makes total sense to me and in my opinion avoids all the previously mentioned conflicts discussed here. No one wants to see our parks and public lands destroyed by unruly geocachers, that is why the onus should be on the placer to make the cache properly accessible for the cacher.....this does not mean that the placer cannot use tools, but the cacher definitely cannot.
Cheerio,
ImmY