In the early 50s i often went out with a crew from Loughborough who ferreted our boundaries, if possible large Trees were avoided but shallow hedge row setts were done as they had been worked for years by the same crew, if a kill or a tuck was suspected the liner was brought into play, it was always a large Hob that had been kept alone unless it was to be mated , , the harness was fitted and the line was attached and the liner entered in the hole where the rabbit was last heard if possible and the knotted line was slowly ran out for about 4 feet then dug to then repeat until then