Thing is you need to hit them on many fronts on all servers. At the time we did the no prem in november we started it in early october. We made up some symbols for clans that said no prem in november, we had a basic ticket we could submit to CS, and it started with a few clans in ares. You need to speak with some clan leaders and get a grass roots thing started and it trickles from there.
I am sure most of the older players remember when at least half the clans had "Fuck KOXP" or "No Prem in Nov" as their symbols.