tracking is such an individual thing. you really have to study your dog closely. see how he reacts when he loses scents, is he air scenting, does he take you on some ride to something else, is he honest and smells the ground in a few direction for a minute and then gets back on track? and i agree i would lay your own track for a while,. so you know where it is, and how much food you used. obviously one good way to tell in the beginning if he's not picking up the food he's probably lost the track. although it shouldn't happen if your using alot of food right now. but, you must geographically know exactly where your track is, that can take time for some, unless your using flags right now, and thats not a bad idea, until Benny and you get used to things.
My Sam is totally more interested in the track now that he's advanced. but, i had to work on the articles, because he was tracking around them because he wanted to keep going. now that thats worked out, we are good to go. there are alot of things that have to be worked out along the way as they advance.