I agree with all the posts. Be polite and honest, tell them that you are a safe hunter and will not hunt near their home. Bring a signed release form so that they are not liable, and a homemade apple pie or cake doesn' t hurt your chances either!
Make sure to stress that it makes you mad that hunters who trespass or disrespect the land when they are hunting gives all hunters a bad name and makes it hard on the good ones.
I know many landowners, and trespassing hunters, who even when confronted act like they have a right to be there, make landowners not want anyone at all on their land.
Good Luck!
Mark
http://www.buckhuntersecrets.com