Sorry to hear of your trouble Danny...I would love to hunt these guys old school.
What I mean is find them first and then strip them down the their underpants (nothing sexual) and then release them in the woods and give them say an hour head start. I would Commando myself up like Arnie and hunt them like dogs for two days with a crossbow. When I glimse them through the tree's I would only maim them as to prolong their agony.
I'd fire so many bolts into them they would look like a bottle brush, but each bolt would be placed as to miss their vital organs. After a couple of days bloodsport I will tie chains round their ankles and drag them with a tractor to a disused barn where I will start work on them............ vinegar and a sword and then a few hours with a blow torch.
I hate thieves.