I have a wonderful place by me that offers swimming. They go in the pool with the dog and the water is 92 degrees. Maybe you can find a place like that? My oldest dog has son arthritis in her one leg that had a previous injury and the vet recommended fish oil over the glucosamine. She said that stuff is hit or miss but the fish oil works. I have no clue if this is true, but it's what she recommended. In the picture Midnite is swimming, the two people are a couple feet from him.
Slightly off topic question because this is really neat... Is it a dog pool? Or a training facility? Can you get in with them? I've never heard of this before! We don't have a pool (or any natural bodies of water nearby, really, except the dog beaches) but I'd love to expose our puppy to swimming. Also didn't realize it was good for strengthening their hips. Will need to look into it... Thanks!