Well, almost all the sow's owners are familiar with our set up and have contacted us for advice on piggy matters since they bought their stock from us. We tick all the boxes on the list of stuff to look out for and keep a very close eye on all our pigs, which are in a place where folks pass by frequently throughout the day so, although it's possible, it is unlikely that a visiting sow could have a problem we'd not spot. If we did suspect a problem we'd contact the owner then, if they agreed, our vet and pick up the tab unless it was identified as a pre-existing problem. We have no formal agreements in place but would offer a free replacement animal if it ever became necessary. For us, breeding from a small number of top quality sows mainly for conservation purposes and therefore registering and selling on the best gilts, boar hire is a good way to keep the boar happy and provide a service for smallholders who love their GOS but don't want to, or have the facilities for, keeping a boar all year round.