Why not just require everyone that wants to use public lands to purchase a hunting license? Change the name to “hunting and conservation license.”
It is a good idea, this past summer CPW passed a law requiring everyone using state trust lands that are leased by CPW to purchase a hunting or fishing license. They got sued by some animal rights group who didnt want to be associated with hunting/fishing. I think it is not within the state agency's purview to simply charge a fee to enter these lands, it has to be through some sort of "consumptive" license. I'm not sure on the specifics of that, however.