It would be worthwhile to at least attempt a fight to open a 1/8 mile-wide strip from sand highway to patton - and argue it's a life-safety issue. That would accomplish two things - give people a nice large "circle" to ride in and avoid that long closure strip along the highway, and honestly, prevent people from just ignoring the borders.
Maybe even a couple of those along the sand highway - basically a designated path in and out.
It's not asking for a lot but would result in less people crossing the closure, safer duning experience - and most importantly to win the argument - result in benefiting the plant life that sparked the closures.
Easier said than done of course.