Firewire's Twice Baked is very obviously a squash-tailed little brother to the Baked Potato.
As far as dimensions go, if you ride a Baked Potato you're likely to ride the same size Twice Baked. There are rather significant changes to the design overall; the most obvious being the tail outline, and then the bottom contour. Like the BP, the TB has a double-barrel concave set within a single concave under the front foot, but it is slightly less aggressive and this time I split a concave into V just ahead of the centre fin, or about 6-7 inches up from the tail. I also smoothed out the deck contours to add to an overall cleaner look.
This board is going to want to be surfed with performance in mind- with your foot all the way back, a low centre of gravity, and to be pushed hard through turns, as well as when you are generating speed down the line and through soft sections.