Evie is very good at sitting still and being rewarded for not reacting to dogs or people as they walk by (it took us a while to get there), however, being on the move can be a bit more difficult for us, especially if we need to cross the road but another dog is coming along or a person is close by.
With a reactive dog you need to be on alert for triggers and you need to spot them before your dog does. For example if you spot a postman coming around the corner, you need to start with the treats even before the dog spots the post man - we are rewarding for calm behaviour.
It is best to avoid close encounters until your dog's tolerance level has really been improved. Although Evie is doing well, if we have to walk closeby to another dog or person she can become overwhelmed very quickly and lunge toward them barking. If you can calmly corss the road, do so, if there's an empty side street you can take, do so, if there's a patch of grass for you to retreat to and stand treating your dog as the trigger passes, do so - no, we understand that it is not ideal and walks will take much longer but you are stopping your dog from becoming overwhelmed and damaging your hard work.