The loop method is the best and works on humans. As for trying to get a panicked dog to stay still, that's another matter.

Here is are two links showing it being done:

https://www.youtube.com/watch?v=06T9c5YMLzA

https://www.youtube.com/watch?v=aMK-M2rTX5M

I don't use fishing line. I also see no reason to tie it around the curve of the hook. I have a loop in my tacklebox that is some thin nylon rope all set to go. If I can remove a large treble while in 3 ft waves by myself then a couple of helpers can do it very easily.