RE: Permission letter?
A personal approach is better i think. Fill out a card with your information on it and go see the man meet him talk with him let him know your intentions. Give him the card afterwards and let him think it over.....all the while let him know youd be willing to help with fences and such. I actually help one of the guys i hunt on harvest his crops i drive the grain wagon for him to speed his process up it works really.........try it.