Another option is planking. This has the desired effect of giving a uniform final "skin" thickness which is hard to achieve with a carved and hollowed block. Make a series of supportive bulkheads, strip some "planks" of your choice thickness balsa, and start cutting them to fit. Start at the fuse/deck joint and add strips on alternate sides so that you "meet" at the top with pieces that are matched on both sides. Use a sandable glue such as Sigment (old style cellulose glue). Works on any irregular shape, and not to be avoided because of the cut and fit program. Just take your time and use lots of pins, tape, whatever, as you go. I'll try to attach a pic of a turtle deck done that way. Good luck, Dzl

Well, I can't seem to get the attachment done. Sorry, Dzl