not quite sure how much of a leader underground is as wood cores have been used since day dot by addiction kiteboards ( at least 5 years ) as for double concave not sure about that either as it has been used in every water craft design you can think of and is least effective on kite boards as it causes too much lift and as stated in the underground promo video that they had to make 18 proto 's before they could find one that rode as good as the single concave.
so this year there "it " next year their" not ". its all about the marketing.
graphics, not sure about that either this was given to the world by snowboarding and it"s called sublamation printing and can also be found on coffee cups ,ties and footy jumps .
it seems that underground get the better reviews over cardboard because of the great retail mark up on them.
in the great words of ACDC
come on, come on listen to the money talk