Hi David, What I mean is how much the gander will tolerate of you once his girls start laying. Our boy Gandalf is quite gentle at this time of year, but put your hand under one of his nesting girls and you're asking for a peck on the bum! Hopefully yours will be all mouth and no trousers, but there's no real knowing until Springtime!
I've never actually let mine sit on eggs, so I can't advise on what to do once they have goslings. Actually I'll be reading this thread with interest, as I'd like to hatch some naturally this year if possible.
What I do know is that wherever you plan for them to lay, they will usually choose somewhere else. If you're going to let them sit, ensuring that that place is fox and magpie proof is a top priority.