> I disagree with those that say you should click when the dog turns or when it is on the way back.
When would you click then? The click is there to tell the dog that it's done exactly what you are after: turning and heading back to you is what you ask for in a recall.
You can change when you click as training progresses - click for the turn initially (and as I said before, encourage the dog all the way back to keep the momentum), then when the dog is nearer, then when the dog has arrived.
You can go straight to the last bit but I find that to begin with, that isn't enough to motivate a novice dog - as with any behaviour, you've got to build it in increments, not go straight for the finished produce right away.
Still, it's all horses for courses. The above works well for me in combo with the E/D-E game I mentioned, and with foundation work starting at home to build up lots of successful repetitions before taking it on a walk. I also start any recall with a basic exercise of pairing the cue with food before I do anything else 9same method as charging the clicker, just with the cue instead of the click).