Why OHV permits exist
OHV stickers and registrations fund trail maintenance, signage, ranger patrols, and access negotiations with private landowners. Money in equals money for trails.
The fees are low ($10-$50/year per rig in most states) and the consequences of riding without are real — citations from BLM and USFS rangers, plus loss of insurance coverage on the host's policy.
PickRV's rentals come with the appropriate sticker for the staging state. If you cross into a non-reciprocal state, you (or the host) need additional compliance. The listing surfaces which states the rig is compliant for.