The cross bars (if thats what they are called) are 7' sections of mast. The front is beaded and the stern is laced with a piece of rope as the bead. Its solid for sitting in the field so long. If I buy a Hobie sail, should I try to stay as close to the original size as I can? I would also assume that I will have to buy a complete rudder assy. and not just the blades.