All of our free ranges close to Denver got too crazy and have been shut down. They would get full of yahoos, meth heads and other losers with no respect and gun safety. They would shoot as other were placing targets, shoot from all over and behind other shooters, bring trash to shoot up and leave, it was a nightmare.
The one by Colorado springs a guy was shot and killed while changing his target so it was closed down, the one in lefthand canyon was just sketchy a ranger claims he had a bullet wiz by his head and it was shut down.
I don't mind paying a small fee for a range master and maintenance. We have a big shortage of ranges here and most are expensive.