I dunno...that Nacra carbon mast section has some very different bendy characteristics but the carbon is not as light as it could be (for instance; they rarely break). Judging merely by lifting effort, the 29' or 30' Blade F16 aluminum mast is lighter.
Holey moley !
When I picked up Paul W's mast at Datchet a few weeks ago I thought that was real heavy !
I was expecting the Nacra Carbon section to be around 10-12 kg, are you saying it is more like 20?