How to knit the thumb of fingerless

Follow this link to see entire fingerless, mittens section

Three different ways to knit the thumb of fingerless

O yes, thumb is a slippery part of the anatomy to cater to.
Thumbs are the reason most people quail at the thought of knitting mittens. I want my fingerless to fit perfectly.
I know three ways, they are in this picture from a book of knitting.

I experienced to knit all three. These fingerless probably took me about three or more hours for each one, but I am a slow knitter.
This thumb is most beautiful.

This thumb is most beautiful.

This thumb is fastest.

Also experienced to knit the thumb with crochet hook.