Well if flight is allowed but landing and takeoff can be dictated by the state, how about if my truck (or car) is in the park legally and I use it (hood, trunk, truck bed,etc) to land and takeoff. The vehicle is private property; hence not using the parks property. That should complicate the scenario to confuse the park officials. Just a thought!
It's hard to imagine a park ranger dumb enough to be confused by that. Do you really think that your vehicle constitutes private property when on park land, and so none of the park regulations apply to you as long as you stay in the vehicle?