>>658977Another possibility is to attempt the West Rim Trail. In order to get here you would drive through Kolob Terrace Road. Usually they would require that you have a permit (which are only around 5$), but there's a low chance of anyone checking on you, especially in the park. But you're shorting the funds that the park has to work with.
So, this hike is about a full day and will probably be one of the longer hikes you'll find in the park. However, you'll experience something that a minority of the visitors of Zion experience, which is descending into Zion from above. You'll be able to end at one of Zion's most popular hiking trail (Angel's Landing). I would recommend that you finish the last portion to the very top of Angel's if you still have daylight by the time you get there or if there's a full moon out. If you get to Angel's at an early enough time, you'll run into the big crowds.
You'll need to find a way back to you're vehicle, but they offer "taxi" rides back up the Terrace... or you can hopefully snag a camping spot in the Park.
2/?