Twice as long as you I was brought up around them by a very knowledgeable man who worked hard and culled the same who dug alot with some well know men around the country when travelling wasn't as easy as it is today he was a hard man to please but was always brutally honest about his dogs something he instilled in us no offence but you seem the know all don't want to listen harder is better bridage from what I have seen they dont normally last long or normally don't get out with decent sorts who you could learn from or get decent access to good stuff from so lose the chip buddy