If you use the property in a manner that is open and notorious and continuous for the statutory period.....bingo, it’s yours. Tried one of these in East Texas once and won it. Bordered Toledo Bend Lake. Fun case.
But they didn't; the aerial photos prove that they didn't. The case will be overturned.
Thats right. Goes back to Common Law. In CA I think it is 10 years.
That way any "possession" or "use" of your property by those folks never becomes an "adverse possession".
Get it in writing too ~ file it with your deed down at the courthouse.
Alternatively you can put in a barrier, but folks have done so and lost in court. Giving permission and proving it has never lost ~
A variation is to get them agree to pay rent for crossing your land.