that might be the way to go then, if we are talking sub $200 then ill put my hand to it. come to think of it the 4th year students over in the civil eng test facility are for ever putting carbon fibre on beams trying to get them to work better!
Might go talk to them! full CF tube for ~ $200... and light as light can be. that sounds like a winner to me!
Edit...
Just went searching for cloth, 1070 wide 200gsm CF cloth 87 dollars per meter! sweet! looking at this i might be even able to get the tube down to sub 2kgs
now im thinking this is good!