Also.. and I've said this before..
The kite that I was flying all afternoon (a 1.5x Dunton Taylor) that several commented on, how well it was flying... The 3 major spars in it, wing-spars and cross-spar are
all fiberglass 
There's a lot of misconception that carbon is better than fiberglass.. and in a lot of ways it might be - but fiberglass has different properties and is sometimes better suited to a particular application.
Don't regard fiberglass as a poor mans carbon.