In theory the Halti harness is a good idea, and I liked the fact that the lead is fastened at two points, on the chest and back. However the mechanism on the chest is supposed to tighten when they pull but I've got 2 and neither of them have ever tightened.
If you would like to try the Halti harness I could send you one of my redundant ones and see if it works for you (I'm not sure about the size though, but at least you'd get to see it in the flesh and could give it ago) . I'm sure that it partly comes down to what each individual dog responds to too.
I think the newer version of the Halti harness works in a different way - I have one, and it isn't designed to tighten anywhere - but I have read posts on other forums from people who say the "new" design is easier to use then the old one
The one I have fits around the body and chest, and links to the collar. The chest ring has to be stitched in place one the harness has been fitted (not whilst on the dog though
), which means they are uniquely fitted to each dog - a bit of a pain if you have more than one dog, I imagine
When the dog pulls, the tension is converted to a sideways "pull" a bit like a lever; so turning the dogs body around towards the person they are pulling against
I started by using it with a double-ended lead, but now I can just clip a normal lead to the front ring and it has reduced his pulling significantly
If I clip his lead to just the back-ring, it turns the harness into a "trail type" though - and he can still pull like a train
I almost gave up on it when I first bought it - buy I e-mailed Company of Animals and got a brill e-mail back which took me through it step by step, and included pictures taken of a dog belonging to a staff member wearing it (a working cocker!) - which really helped. Molo's not perfect by any means (yet), but it gave me back control without strangling him and hopefully we will learn how to walk nicely to heel as part of the clicker classes we have just started
BTW Colin - I thought about fleece sleeves when I first saw Cheryl/Snoopys Easy Walk harness for the first time - but it does have them, just like the Sporn; they're not in the picture either though