I am a veterinarian so I offer free services on their livestock. I am lucky in that regard. I also help them tend fences, move cattle, etc. I tell them to call anytime they need help. they really appreciate this. Some may be reluctant to call at first so just show up periodically and offer your hand. I also send them a gift pack from Omaha Steaks during the holiday season. I only send those to a couple guys where I do the majority of my hunting. That would get expensive with several farms. Likely still cheaper than a lease though. I agree with all the other posters on the stopping to show them your game. It seems even if they don' t hunt they love to see your successes.