There's really no gray area to it.
Enter upon private property without permission and you are trespassing and violating the law. Real cut and dried. No trespassing by necessity. That's bunk.

When you are the guy paying the taxes on the land it's pretty simple.

Just call and ask and you won't have to deal with a pissed land owner........ who is probably only slightly less protective over that land than you would be over your virgin daughter.