The tracking trials here are following the scent of a person. So you could get J to walk out 100m, drop a sock, turn 90degrees and walk a bit further and hide behind a bush or something. Then you could increase the distance and number of turns. That's after you've done the ground work like @UncleBob of course
https://www.google.com.au/url?sa=t&...gglMAA&usg=AFQjCNGIqeddrEZnu9CWZjMaO3gcsOPaKQ Here are the Australian rules and I'm sure other countries would be similar. Might give you some ideas
We play hide and seek quite often on walks - the dogs go mad for it. They will run back to where they last saw me but, if they continue back on the path, I can always see Willow scent the air, knowing that she's gone wrong, and she'll use her nose to find me. She's a clever little chicken.