From Kent "Regarding ownership of closed land, there are five pieces of land in the Near Trapps and the Bayards, now closed, that were open as a neighborly accommodation prior to April 2009. "
I suppose you could argue that the Preserve needs to build a path if it wants to cross over.

This is kind of silly isn't it? When we are talking about the boarder of a property at the edge of a cliff face such as has been first defined back 100 years ago, where since then rocks and dirt have annually built up and horizontally away from that said boarder, this means that as I walk now on that path today it is no longer over your property. And this is already obvious in most places.
Now, if one wanted to remove that gift that has fallen down to us from the heavens then they would need to remove all that debris down to where the original property line was back when it was first said, to make sure there is no ledges under there that dirt is not on etc. The rock in these arias is always falling off the cliff and that means that rock at the base is always marginal ground. The rock changes and ledges explode, I have seen it happen. If you want to split hairs you would need to get an mini-excavator and an archeologist up there. And regardless if you did that or not people have a right to walk the boarders of their property. How else could these lands be surveyed? You cannot not check the survey it at the top of the cliff, that's not where it happens, except in those cases where your property owners own the cliff, but even in some cases that is in dispute, the language is sometimes confusing.
To get right to the point of what I am saying, if you were to build a fence up there along the edge of the cliff, as you hammered the pipes down the fence would lean, and subsequently you would have to plant those posts at least 3' away from the edge of the cliff. And even if you put them right at the edge there would still be enough room in most places to walk between the fence and the cliff. As I understand it where there is a property line at "the edge of the cliff face" today I can walk across at high tide as I always have before.
But this really is not worth arguing about anyway, as far as people going to Bayards or going to these parts of the Near Trapps, there is nothing there to climb. The rock is always loose, and people can go around to where the rock is good, it makes little difference. But then again on second thougt, I think you and your neighbors are crating hazards to completely block off access knowing people are back there. In the case of some kind of stress or accident are you and your neighbors going to run up to the cliff and stand it the way of a rescue or someone looking for their lost child?
Ultimately what is being convened here is hate toward people, not hate for the Preserve, and your going to run up there to prove it? I hope this helps.
DJP