Al knocks on the door...he is an old man that looks harmless..he says that he has a retarded kid in the car and points to me in the car...and that the kid would like to metal detect and we are looking for a place and would it be ok.......they always agree. At least that's how he says he does it...he has about a 90% YES ratio
Tim knocks on the door...he has been met with bats, crow bars, and vicious dogs.....his ratio is pretty low..but he does get some YES
Personally, I knock on the door, introduce myself (we are rarely in our own town) and point to Al/Tim say they are my buddies and that we metal detect for a hobby and we we look for old buttons and buckles (I never mention coins), I then find something to compliment on their property, like "and you have a beautiful old home." and we were hoping to be able to have the opportunity to detect here if you are ok with it. I have about a 60% ratio of YES. I never offer to split and if they want to I just move on. I have given things to owners in the past, but I do not start that way.