I bought the Nacra carbon fiber telescopic one.Felt great while it lasted but broke like a popsicle stick the first stress it was under.I think it is poorly designed as the end where it connects to the cross bar is really thin and the grip end is thicker.
Mugrace what did they charge you to have that shipped (the CST one).I also looked at there,s and it is really popular on skiffs and catamarans in Australia(some of the guys were using them at the hobie 16 worlds)but the shipping costs were very high.