They ought to get some really crotchety old dudes from the local senior volunteer police out there to regulate the range. Its the perfect job for some bitter old man who loves to yell at people.
That, or just make it a public for profit range.sounds like enough people go there to cover at least basic operating cost.
What else can they do? Oh yeah, close the range! Its impossible to control the douche-baggery without real regulation.