I suggest to do both. Many people don't know what the blue stripes mean (many states south of here use purple). Add signs at anything that could be a point of ingress.
Yeah, I hear parents who tag along on our Hunter Eduction field walk all the time say "so thats what it means". Its a good to help them, as well.
People move into Maryland and do not read the hunting regulations or do not apply what they read to the real world.