Hmm, even 243 isn't comparable to what normal feet get on a normal board for leverage, though probably a big improvement. 9.5 feet get an extra 13mm on a 253 board, and a 7 would get just 1mm on a 243, and back to negative at the inserts with angles factored in.
@ETM: yeah, can't find any sidecut that aggressive, can barely find suitable boards at all. Unless you mean custom specs.
WTF do they ride in Japan? They must have boards that don't land over here.
Im talking about a custom shape. Divide can do it for you easily.
I feel your pain too. I built some super wide boards and they were so hard to edge-lack of leverage, you really need the right width board to enjoy snowboarding.
Hit him up on facebook or email about a custom shape, tell him Goz sent you ;-)