To put your dog on a lead if you see another owner do so to their dog once they've spotted you? Especially if your dog's recall is a little sketchy? I've seen a lot of owners put their dogs on the lead at the sight of other dogs because they may, for instance, not get along with other dogs. But if the other dogs are off the lead and so still able to approach the one on the lead, it entirely defeats the effort. Anyone had any experience with this?