After a couple of years of being engrossed in sheepdog stuff, I've been totally hooked back in to tracking which was the first dog sport I was introduced to. Up until a month or so ago we'd really just tracked on grass and through the woods but we've been practicing a lot on different surfaces lately and, now, eventually, I think we're doing a pretty good job. Once I had laid the track and called Percy out of the car to get him harnessed, he shot out like a rocket. By the end of the track on the tarmac surface I think he was pretty much finished, but the reward of a couple of hotdogs at the end was gratefully accepted. ps. Thanks for the book recommendation, Moobli, it was a very enjoyable read.