We had a question at our last General Meeting on cost of a permit ($10 for 3 day permit). I did a quick search and came up with the following, https://www.fs.usda.gov/Internet/FSE_DOCUMENTS/fseprd1209317.pdf. The fee is not for the entire National Forest but only for 4 OHV areas, Bulldog Canyon, The Rolls, St. Clair, and Desert Vista. The Lower Sycamore OHV Permit Zone will eventually be required but the exact date of implementation is still to be determined.
For OHV Area maps I refer you to, https://www.fs.usda.gov/activity/tonto/recreation/ohv/?recid=35199&actid=93. You have to search for a link to a map (not easy to see).
Keith Menasco