Maybe you should travel to his stand since he isn't using it. I know this is a seriously tough problem to deal with, as I have a similar problem. But going to your grandpa and asking for the sole right to hunt the land is the way to go. Explain your problem with your friend being allowed to hunt, and ask him if you could be the one in charge of hunting rights on the family property. Let your grandpa know that it's your only place to hunt and tell him that it's only fair that you should have first chance at it. Explain that your friend is being a pain during deer season. Ask if you could be the one to ask permission of. After your hunt is done then you can invite friends if there is time leftover to hunt. Offer to help him with farmwork to insure that you've paid your dues to your grandfather and the farm each year, as payment for the hunting rights. Then all he has to tell people, is that you are the one to ask.