Gunnison river pleasure park does shuttles for this stretch
I do this stretch two or three times a year....and there is no way I would leave my car overnight at the white water take out. Every single time I am there something sketchy is going on....whether the sheriff is there for a break in, or our cars rummaged through(we don't leave anything of value), or strung out folks riding out their high.
We tell the gunnison shuttle folks to keep the windows down on our cars(with nothing in them)when they drop them off, and not until the afternoon.
The Dominguez take out used to be just as bad, but the popularity of the hike brings in a lot of people all day long, so their is not as much theft.
I once saw a sheriff taking a report on an entire bumper stolen off a big ole pick up, there. I don't think i would leave a car overnight there either, but it is better than before.