Craig, use a specific call every time you get to their pen with food (just "piggy piggy piggy" will do
), and in no time they'll know that that sound equals you/food, and they'll follow you back home should they ever escape and hear you calling. We had escapees last summer when the electricity was off (not our fault) and some weaners were several fields away, about to break into the farmers' garden.
That was on day 5 after arrival, and when we finally found them we just called out as we usually did when visiting them and they ran towards us and followed us back over the fields with great enthusiasm. It resulted in a very funny bit of footage on the mobile!
As someone mentioned, when still getting used to the electric fence weaners do indeed sometimes jump forwards through the lines. If they don't seem intent on following you or the food bucket back in (at first they won't know you yet), approach them calmly from behind and pick them up by both back legs, somewhere above where their 'ankle' would be. They won't weight too much yet, just do it in one quick movement. They won't squeel or wriggle this way and you can carry them, hanging upside down, back to the pen. Carrying them they way we normally would carry something (i.e. box, puppy) makes them squeel (oh, the volume!
) and try to escape your grip - and they're strong!
We never held their nose to the wire, though, they did that themselves right away and learnt quickly (they also learn equally fast to keep their backsides away from the wire
), but then we do have the time to stay with them the first day in case they get out - hence why our weaners always arrive at the weekend: 2 people on weaner-watching-duty!
When we had our first weaners, we were totally paranoid and I rushed back to them all the time.
So don't worry about being paranoid, it's a good thing: it means you care.
Enjoy!