Take your hat off if it's a lady who answers the door. Always use sir or ma'am. Just be nice. Try to not go in full camo when you ask if at all possible. Ask them if they need any help around the farm and if you know someone who will vouch for you that they know, make sure they know. You don't have to be blatant about it. But if you know they know your grandfather, your brother, your good friend, anybody, ask them anyway. Because if they are reluctant about letting hunters in, they may call that person for some info about you.