I would say it's unethical and maybe slightly illegal to hunt the land without permission from the landowner. If I got this right, you got permission to hunt land from someone that doesn't even own it but lives close by? I wouldn't hunt land that I didn't have verbal or written permission from the landowner himself. And how do you know the other guys don't have such permission? If they do then I'd be pretty dang PO'd if I were them too. Also, even if you both have equal rights to be there...........300 yards is not very far away from another hunters stand IMO.