What really needs to be done is to get in the face of some of the people who use them.
Not everybody who uses those (free) places appreciates the fact they are provided.
A percentage of shooters who use them are idiots who only enjoy mowing something down or blowing something up.
I don't believe its the PGCs responsibility to provide a place for them to do that, or to continue rebuilding the facilities.
Its a mindset, where some feel its the government in some form who is responsible for providing for them.
The only way it can work is to change the free shooting, to a fee for shooting.
Then gate the access, have posted hours, and provide a uniformed person to control what goes on.
Anyone unwilling to spend the small fee to zero their gun can stay out.
Florida has public ranges run and maintained by the counties. They charge an hourly fee and are run very well.
A car load of guys with black rifles and a bunch of cheap ammo wouldn't be very welcome.