Grisha Stewart is a professional dog trainer, author, and international seminar presenter based in Oregon, USA. She helps talented teachers share their expertise with trainers and dog lovers. Check out her website grishastewart.com.
I occasionally teach a “leash manners” class at my friend’s dog-training center. In the first class, their hands are all over the place, and cues are, “NO! NO! STOP it!” I almost always see a tiny improvement in week two.