Yeah, we tried our best to introduce it gradually, using treats to get him to let us put it on him, letting him just wear it around the house for a bit, feeding him with it on, etc. before we ever tried walking him with it. He was ok with the GL at first (clearly didn't love it, but tolerated it), and initially, we saw a huge improvement. He wasn't pulling much at all, and seemed to be very comfortable and relaxed. But that didn't last long, and every day he was less and less tolerant of it. When it got to the point where he ran at the sight of the GL, and we couldn't walk for more than 5 minutes at a stretch without him trying to rip it off his face with his paws, we decided enough was enough and we went back to a regular leash/collar recently.
Interestingly, he is pulling less on the regular leash/collar than he used to. Whether that is just because he's a bit more mature now, or because he's just grateful not to have the GL on, I'll never know!
Interestingly, he is pulling less on the regular leash/collar than he used to. Whether that is just because he's a bit more mature now, or because he's just grateful not to have the GL on, I'll never know!

I have to admit that I hate having my brains picked about a product and they never come back. so I just KNOW they went online to buy.