I have often thought about trailering the bikes and fuel in and setting up a small inconspicuous spike camp. Take day rides. I'm not interested in riding thru the park, but would like to explore all of the legal roads around it. Maybe this next winter...
I agree; that would be a good way to visit the area. Probably the best, especially if there were a mechanical problem or an injury. It would eliminate the big problem of fuel resupply.
It's my understanding that it's a bit of a problem trying to bring two vehicles in to Mexico.
Assuming that there is a work-around for that, I'd be hesitant to leave a vehicle and campsite set up and unattended.
The reserve is owned by Cemex, and I think all the surrounding land belongs to the various ejidos, so no matter where you set up, you're on someones property.
And this is just my gut feeling; it's admittedly based on ignorance of the true reality of the criminal risks in that part of the frontier border region, but for security reasons, I would not want to establish the pattern that a remote base of operations would require. Maybe it's just unfounded paranoia on my part. I don't know.
A hybrid option for this would be to forget the trailer, and enlist a few 4X4 enthusiasts to go along. The Jeeps would do their thing, the bikes would do their thing, and there would be coordinated linkups, campsites, or maybe even just fuel and water caches established.
Lots of moving pieces to make something like that work.