why not pay a little extra on a pass to be able to have gest come in have the plate # of the car on the pass and only be able to have like 2 to 3 # on a pass a year??? and then have parking down below by the creek for just cars to pay a smaller fee for parking you can do like they do in the city have a lock box that you pay in to and if you dont you get a ticket ???? it is a joke for some one to visit to see the dunes and have to pay that much $$$ for a hour or 2