Sounds to me he is on the right track to ruining it. I've never read such a catalogue of basic errors. Running rabbits near tracks, electric fences, shining torch over fences into fields!!!!!
Forget the seasons nearly ended mate, that don't count for pups. Your on a farm for fucksake, you have the best opportunity. Wait till the young rabbits are 3/4 grown in a month or 2, get the dog a slip lead and get yourself a lamp. Pick rabbits that you'd practically catch, middle of the field type, they will sit out there if you don't harass them. Walk the dog right upto them or as close as possible.