I see these posts from time to time. We own several large farms and in my lifetime one man was allowed to hunt on us till he died. I was 15 years old when the man drove up and talked to the man that raised me “step dad”. Few days later the guy came back and started cleaning fence lines.
Years later I found out he was the only person who ever drove up and asked to work on the places so he could hunt. He died in 1998, He worked every year cleaning fence lines, for the privilege of hunting on over 6000 acres. He initially thought the place he was asking about was a couple hundred acres.
So might I suggest you ask if you could work for the privilege instead of just asking for free hunting rights. Over my life hundreds or more have stopped to ask. Only one ever asked if he could earn the privilege.