Not being a dog man myself....a few mates are and they approach new perms with the idea of ferreting with a dog or two......they do a few sessions with the ferrets then they turn up with just the dogs speak to the owner who knowing what the lads are doing allows them with just the dogs....always stock broken like you have mentioned and always clean the lads do this in the respect of landowner and his lifestock i feel this is the most important part of new perms...always have respect for landowners...good luck with your hunt mate
On getting a permission mate always do it face to face.....i