Two bits of advice on flying in Nat'l Parks. Tip #1 Scout the area out to find the most discreet / concealed place to fly from out of public sight. Don't fly any higher than you need to to get the "shot" you want. Use a circular path to return to you to confuse anyone who may be tracking your bird. Land quickly and pack up and stash your bird out of sight and walk around a bit and see if anyone shows up to "look" for that drone flyer. Tell them your looking for them too. Don't fly anywhere they do helicopter tours...period. Tip #2 Do not fly in Nat'l Parks. Tip #2 will avoid a lot of stress and possible legal consequences!
I assume this is for those illegally taking off WITHIN a park? Since taking off OUTSIDE the park and flying into it seems to be legal...