The retractable dog lead
Retractable leads are not good for teaching the dog loose lead walking
Because the retractable lead works, it is always under some tension. As a result, the dog becomes confused when it learns that it shouldn’t pull on the lead.

Retractable dog leads are dangerous when not used properly
Because retractable leads are essentially easy to use, people become lazy. This often results in people not paying. attention as to what their dog is up to and what is going on around them
This means that both dog and owner can get into all sorts of trouble. For example, the extended leads, usually thin rope, can easily cause friction burns to your hands and legs. I’ve also seen some very nasty cuts that have required stitches. This has been due to the lead getting wrapped around the finger, and the dog suddenly pulling it tight
I have also been sent flying when the dog wrapped the lead around my legs and took me out due to the dog owner’s being on the phone and not paying attention (I know this could happen with an ordinary lead, but not as easily)
They have very bulky handles, so they are easy to drop
Again, if a dog suddenly sees something because the extended lead allows them to build up speed, they are far more difficult to hold onto. As a result, you can end up with a big lump of plastic hurtling toward the dog. This is enough to scare anyone (including dogs), so they are likely to bolt.
However, I do see how they can be an advantage in strange places. It is imperative to keep an eye on your dog, the lead, and the surroundings, and if you are uncertain, make sure the lock is on (though it can fail) and that they are wearing a short leash.
Long training leads/line
These, in essence, offer better control and are recommended by a dog trainer. As the name suggests, it is a very long lead, and it makes the owners pay more attention, as they have to manually let the lead out or bring it in shorter, which would be my preferred choice.
These types of leads require more skill and more engagement with your dog to use. But that is an advantage when you are out on a dog walk.
It should be noted that, because these can often be made of rope, you can still get burnt, so work gloves may be advisable.
As your dog improves at recalling and behaving, you can let the lead trail on the floor, giving him more freedom. But you can still stand on the rope in an emergency.
I would suggest that when using a long line, you tie knots every foot or so to make it easier to stand on the lead quickly.
Of course, having a rope trailing around the floor can be a trip hazard. Care still needs to be taken.
Safety first
Whatever lead you use, I would always recommend a harness. This makes it far safer and more comfortable, as you are not causing sudden jerks to the dog’s neck.
Another helpful thing to use with long lines is a bungee attachment. Attach the bungee between the long line and the harness. This can absorb some of the shock when the dog reaches the end of the line.
Our article on Dog Walking Tips Everyone should know is worth a read, along with Exercising dogs on a lead.
As a professional dog walker in the Finchley and surrounding areas, I do not encourage the use of retractable leads.
