We used to pick them on my grandfather's mountain land and though he never posted his land he made it known that he better not catch anyone messing with his huckleberrys nor his squirrels. He could have cared less about folks walking through deer hunting.
My grandmother used to freeze the Huckleberrys. She also made a preserves that was out of this world too.....The trick was hiding it from her sorry-ass daughter (my great aunt) who would try to steal it.....I did not shed a tear when that bitch kicked the bucket.
Funny, we used old King Syrup tins with a bail on them to put them in when we picked them.