I have been working with my dog on crawling beside me on the ground over the past couple days. In one place I hunt in the beginning of the season it is 90 percent jump shooting and a dog that can stay down low and crawl with me could be handy in getting a few more birds. She is taking to the training well so far. It is new and exciting to her. Anyone else out there train their dogs to do this or better yet have actually used it in the field?