I wouldn't do it personally, as i like to watch the dogs work and point. But it looks like it'd be a good way to get a kid to learn how to lead 'em. With the limited number of birds nowadays a kid could get more shots in a day than he would get in three seasons. Don't care what they say, the real deal is different than a clay pigeons. Get the feel and then hunt the real thing.
And yes, it's just an opinion.