Trouble is, to truly take advantage of that format, they need at last 300yds, and not many clubs have that. I know it can be done on less, but to make it what it's supposed to be, at least 300 is needed.
It can be modified to be shot at 100. You can also through in rimfire to make it a challenge. I shot the initial one at Camp Perry and had a blast. More distance is certainly better, but it can be done at 100. I know that Trey ( the creator of the NDM, i have his info somewhere) was working on a few variations for short range matches. ONe included an "extreme" version where you laid out the magazines need at various spots and then one shooter ran the entire course for time. Sounded pretty intense!