Seriouslty, what would Efren do?
This is a great article that explains his stroke much better than I could.
Pound for pound, Shane has the most accurate and compact breaking technique in the world at the moment.
Let’s face it, if you are going to copy a grip in any cue-sport, then you absolutely must consider this one.
There are a lot on youtube and they all differ somewhat, as in everything in life there are beautiful nuggets of usefool knowledge in all of them (well maybe not all)