Ask during the slow time of the year after they have crops planted. Most should be done now which would make this as good as time as any. At this time of the year they have more time to stop and yap. Plus there is plenty of stuff during this off time that you can help them with in exchange for hunting rights, from bailing to mending fence. Don't ask during harvest time like many do, that's a thorn in their paw unless you're willing to climb on a tractor or a grain truck and help right then and there. Good luck