After being a member of a local retriever club back home in Ontario, Ive seen my fair share benefits and downsides to using collars, seen great dogs almost get wrecked by collars, and great dogs trained with collars, guys who have been extremely hard on dogs with a collar, guys that may have been too soft, but one thing I don't think is fair to say is they aren't a useful tool. Ive heard it time and time again "If you can't train without a collar, you can't train with one....". Theres so much truth to that! I think that lots of guys buy collars with no experience with them, dont go through collar conditioning with the dog, dont educate themselves with the unit, and expect it to do miracles on a dog. Then when the dog screws up? they burn that dog up like no tomorrow thinking it will be an auto "fix", every time the dog acts like a putz or the owner is hot headed which can do more harm than good....The plus side? After the dog is taught how to turn the collar off through collar conditioning, training has advanced, etc.... It sure makes things easier when you have him or her stopped on a sit whistle on the way to a blind retrieve, then they decide to go into the bullheaded auto-cast not listening to you at all? You gonna ignore that bad behaviour like Mr. Milner says? I thought so. So when your walking up to the holding blind and your dog won't heel, won't sit, won't listen, then he cocks his leg and takes a piss on the blind in front of everyone just to display his dominance over you, you going to ignore that? Nope. Say what you want, they definitely are a useful tool in the right hands! Personally, myself, I use it when in the blind, nobody enjoys a dog that breaks, can't stay quiet or stay put, its a safety thing.. Just my 2 cents