So for you folks with the no-tolerance approach to keeping people off your property: Do you provide another mechanism for people to contact you if they need something (such as a phone number on your no-trespassing sign)? Or is it just "if I didn't ask you to be here I don't care who you are or why you need me"?
The phone number on my sign goes to voice mail, leave a message and if I want to or need to talk or see you I will call you, otherwise stay away and keep off my property.
In my entire life, including living at home as a child not once has someone came unannounced that my family or me wanted to see. If they were welcome they would have been invited and wouldn’t have needed to trespass to begin with!