Maybe you can accomplish that by converting the whole drainage to national park. When you do, you will find the fee structure much steeper than today's.
That would be great! They could handle it like half dome. 20 bucks a car to park at the portal for 7 days, no permits needed for day hikes durring the week, 400 spots on weekends, permits are are $1.50 and can be reserved instantly online or over the phone. No lottery, wait 2 months bureaucracy to deal with. No come to the visitor center at 9, now come back at 11, now come back at 1, now come back at 4 nonsense. You wouldn't even need to be lectured before you got your permit!
Sounds good.
