You shouldn't have the collar on them for any long period of time, as the prongs can burn their skin after 24 hours. I put it on only when I'm there to use it if necessary. Once I fell down the stairs and accidentally shocked her along the way. I'm sure that confused the heck out of her.
I do use it very similarly. It was a last resort to be honest.
I just put how I did things as an example to be constructively viewed. There is a lot of information and misinformation out there. I am far from a perfect human and far from a professional trainer or farmer for that matter.
Somewhere I heard to leave it on them so that they don't associate the collar to the pain.
I have the sportsmen collars for the beagles and for my big dogs, 3 gets their attention, sometimes 2. I have put it on my arm to experience it and it isn't bad. That said, I have put it against my throat, and it bites. I am not sure if the dogs throat feels like my throat or arm due to the fur.... but, I started on 0 and progressed til the dog pricks up it's ears and notices.
I have worked with all the dogs, and I am the only one who has used the collars. I am also the only one the dogs will obey the come command when they get wayward.... sometimes.
Admittedly, I haven't properly given them the time probably necessary to fully train them....
Anyhow, I am kind of guarded about having this conversation because I posted on here some time ago and you would have thought I was the Devil!
I have also heard that treat training a dog is not the way to go, but I live and let live.
Shawn