I've went through the whole page (well, it's not long) and actually... none of the methods can compare with writing with the right hand. So maybe we have to be honest: Our alphabet/longform (and reading from left to right) isn't made for lefties.

I broke my thumb (right hand) once and had to do with my left hand for three months and noticed myself how stupid writing with the left hand is - not because I'm right-handed but because the written language is not designed for it. Honestly, I now understand why it was not unusual to tell lefties to write with their right hand.