There are no staff on State Trust Lands nor in Wildlife Areas to collect such fees. Only State Parks have the staff do that. The hunting and fishing licenses captures what would be those fees for those areas, as I understand.
True but how many forest service campgrounds, parks, trail heads, and other fee areas are on the honor system? How hard would it be to set up a system at the website of these agencies to assess the fee, collect it via credit card or other on-line payment means, and allow a pass to be printed out? Enforcement would be the same. If encountered by an agency official in those areas, a person would be expected to produce a hunting/fishing license or that printed permit. Failure to produce one would result in the same penalty as now.