I learned Underflip 5 and got it pretty safe now.... Now i got the idea to do an Underflip 720, but I'm not sure how I should rotate/jump into it. To give you an idea, how I do it with the 5 now:
https://vimeo.com/81704064 at 0:16
Someone told me to spin more flat into it, but I got the feeling it will be just a Cork then... I might just can add a 180 at the end?
Thanks for you help! :)