I plan to build a Yost Sea Cruiser-R and am looking for some advise. I plan to build the foldable version with aluminum tubing and have not found pictures of the frame on the YostWerks site. Specifically, I was wondering about two matters: first are inwales used on this design? and secondly, on the rear deck how are the tubing arranged at the top? In other words, do you put three 3/4" tubes across the top, do you omit the center tube, or reduce the tubing size? If anyone has good pics of a completed Sea Cruiser-R frame, it would be greatly appreciated.