Neil, call me but mature dogs are hard to come by, these little hunters bond with you so much it's like loosing a kid plus the time and effort for training. A pup will blood track no problem but they can get them self killed with the hunt drive they have so you have to watch them like a hawk. My new pup is 20 months and she still gets in over her head when chasing yotes she wants to fight while I'm teaching her to lure.
Take your time and get a good pup and do it right. I'll be having a litter this winter after the first of the year. But call me and I can turn you on to a litter that may already be on the ground