Ok, ok, we all know there's really no "right" way to do anything, but everyone has their preferences. So here's our tried and tested preferred way to attach a lead rope to a halter using The Loop. It's super simple, and would work with spliced rope as well as a braided Loop (shown in gallery).
But most importantly, there's no heavy hardware swinging about under and around one of the horses most senstive areas - their nose and chin! In our experience, all this does is hinder the potential lightness of a horse and also the timing of your releases. What are you doing groundwork for if not to strive for excellent communication with your horse, in a light and subtle manner, to the point of respectful harmony with one another where you can get a job done as a team. Imagine being whacked in the face during that process by a clunky piece of metal. Jeez.
That's just our opinion though.