It's all but impossible to get a stranger to open up his land to those he doesn't know. Especially over a non face-to-face forum such as the internet, and when there is most likely family and friends that already have hunting rights. Best way is the old fashion way of knocking on doors and being polite and professional. It also helps if you do this far out of hunting season, and not on the day/week you wish to hunt.
Just my .02