take4roll10
Moderator
I just got one for Birch for agility. When he is actually running he does not wear a collar at all. Martingales are actually illegal collars in agility because they do hang loose and also tighten so could cause injury if caught on the equipment.
A regular collar is hard to find at the end of the run in the 2-3 seconds you have to find it and get out of the ring(there is likely another dog already running behind you). I had a leash and martingale combo but he would get so excited to go into the ring he was choking himself. So the harness fits the bill. It does not tighten on his neck, he does not choke himself, his head is free and he can play and tug easier and not yank his neck on the leash and it is easy to get on and off and doesn't pull his hair.
I do not need the harness for control at all. He responses to his obedience commands just fine and I am finding even better in the harness because I don't have to hold him back(thus no opposition reflex engagement).
For the record , yes Birch does relax more with the harness on but he fires up quickier as soon as it comes off.
Barb, Dr. Shelli explains it best. Your dog doesn't wear the harness when he runs. Martingales and hanging tags are not allowed in the ring. Some Venues don't even allow collars at all. Your dog has to run naked.
My dog doesn't wear a harness because she is out of control, she wears it because she will slip a regular collar and chokes herself with martingales when she gets excited.
Sheep, my dog hides when she sees or hears the tags on her harness. She's fine once it's on and enjoys walks, but for whatever reason hides under the table when I want to put the harness on. I can't figure out why.

This will be two years for Sca in November
Last time at CanAm when he choked he was still a 'green' dog of 11 months (this year he has no excuses
)