When you get to long distance training, it would be so nice to have a 30-foot Long Line to do the more advanced exercises. Yes, you can get by with a rope tied to the end of your leash for the long distance exercises but it is so much easier to use a long line.
We chose the Coastal 30-foot Long Line, 5/8 width with a chrome plated swivel snap and box stitched for extra strength. It is good and reasonabley priced.
30-Foot Long Line