Haven't been west yet since I got the Mavic, but headed that way this weekend. Remember though that even though you can't take off and land or operate (physically be in) in NPS managed properties, you can fly in National Forests, so you just need to check other airspace requirements. If you don't use the Airmap App, try using that as it really helps you a lot more than B4UFly in trying to determine where you can and can't operate.