Unfortunatly, Shaun removed all his videos off Youtube, but Nkahler had downloaded the Crankflip Tutorial. Like Unidunc mentionned, doubleflips are basically the same thing as single flips.
http://www.youtube.com/watch?v=D578A0k59ek
Usually, when you are looking for an old video of Shaun, you can check Alexis Bibard’s account on DailyMotion, he has pretty much all of them : Alexis Bibard.
I am sorry, I can’t help much more…
Hugo
“the video has been removed by the user”