At a mere $13.50 each (US) you can grab some 1/2 inch OD carbon tube that is 60 inches long. Makes a nice mast - or straight cross beams for a MultiONE trimaran. Will also work well as cross beams for an F-48 trimaran with stiffener added.
ID: .410"
OD: .500"
Grams: 96.25
Length: 60"
Try: Kitebuilder.com for these and more - and also for sail fabric
No relationship - just found a good sale.