I built this for a friend. I had the royalex hull, that served as the male plug.
Starting on the inside. 5 oz Kevlar, one partial 6 oz rather open weave carbon fiber, another 5 oz Kevlar, and a 6 oz S-glass.
I didn't weigh it, as we riveted on the trim, and minutes later it was gone. All I know he was happy !
We are still looking for ends caps.