I've watched a few of his videos. Loose leash doesn't work for my dog because he gets very excited pulling and constantly sniffing not concentrating on what's going on when out for walks and he has a tendency to mark a lot if I don't have him close by my side. I live in an urban environment a lot of hazards here such as cars, busy roads, cats, dogs etc. If I have him heeling when on lead I know he's safe and he's much calmer because he has to think about what he's doing. when we get to the park I'll let him off leash and he can run around and do whatever.