To avoid all this sort of controversy on the field, OSG in Barnstead, NH has no mandatory surrender rule or minimum distance. The refs are very good there and they do try to keep close tabs when they know the last one or two guys are about to get bunkered. You can give the guy the option to surrender if you want, but you don't have too.
I like a field like this. I didn't see any overshooting and saw several surrenders by experienced players being nice to younger/newer players.
I think if the field has a mandatory surrender rule once your get into a certain range, then the guy should automatically have to surrender. Otherwise the nice guy offering the surrender usually is the one who comes out with the short end of the stick. Even with that its amazing how horrible people are at judging distance.