If i were in those shoes I would start by getting a BLM map of the area. Unit 12 has lots of private that are joined by state lease. They have to let you hunt state lease, but if you do not know where it is then you r SOL. next step print out the land owner tag sheet for unit 12 and look at the RO or UW unit wide ranches have a contract with game and fish that states because there tags are unit wide they need to let you on their property. if they do not call the local game officer and he should be able to get the gates opened. start there