We dig if we can TBH, if we get a mark from the locator on a rabbit, then we try and dig on that mark as soon as possible, as not many rabbits will escape the hold of my ferrets, but when they are dead the stinker is right on to the next, so we generally try to get a mark and if the ferret comes up with blood then we put in a hob and use that to pick up the kill. If you can then dont leave em behind.