Nice way to get to the river. Short and relatively easy. A few stretches to climb but managable. I found it a bit underwhelming. The promise of a sand slide at the end was a disappointment. The climb to the top looked difficult and the people attempting to slide appeared to have to scoot their way down. We met a nice older couple who had worked at the park 50 years ago who said there used to be much more sand. We could see plenty of rocks poking through the "slide" where they said there wasn't any when they worked there.
Awesome view of the canyon. Its a shame that it narrows down so fast and you can't hike in any further. I guess a canoe or raft is in order if you want to see the canyon in depth.
Didn't feel all that safe there at the border and it is true, they never patrol the border, they patrol US 90 2 hours north. Well worth checking out. It is Big Bend so it must get at least a 4.
Bonus Mexican serenade!