People do not realize balsa can be fluff with virtually no weight or ad I call it Balsoak, it is classified as a hardwood in my wood properties book.This "BFDE". (Double Ender) could have easily gone into the Speed Egg thread, but I've posted here instead.
Rails and bottom config is very much a Speed Egg style with hard rails in the tail and some moderate V-Bottom in the tail section.
She's 8'6"x23"x3-1/4". with a 1/8" Cedar Center Stringer & (2) 1/2" Balsa Wood 'outrigger stringers placed 6" out from Center. All done with Black Glue, which adds contrast and a bit of sex appeal esp. to the Balsa.
A note on the Balsa wood......... this stuff is the densest, most consistent Balsa I have EVER shaped! I emailed Marty @ Arctic Foam making sure it was indeed Balsa Wood. I told him it is absolutely beautiful stuff but the density and consistency shapes more like Alder, or perhaps, Hemlock or Poplar.
This board is set up as a Five Fin using Futures Boxes. I can easily see someone trying it with bigger Twin Fins up front with or without quads behind that. Even a Mini Keel in the back center box. It will ride gr8 as a more conventional Tri Fin too. View attachment 27634 View attachment 27635 View attachment 27636