What fields are allowed to be posted?

As of right now I would like to keep all the fields being posted as legal fields. There are a number of airsofters in the Socal community that play on rogue/private fields. Right now we as airsofters are having a bit of a crisis as more people get a hold of airsoft guns, more people are being caught doing stupid stuff with them. We want to keep our hobby alive so for now only play on legal fields or fields that are authorized to have an airsoft game.