On Thursday, 1 December 2016 14:03:22 UTC-7, Jonathan St. Cloud wrote:
Just wondering why glider are not made with pre-preg. Seems like it would save weight.

While I cannot speak for the glider manufacturers , I have a friend that designs and builds carbon snow ski's here in Northern Utah. They started using pre-preg but the types of weave, cloth weights and epoxy types are limited. This manufacturer now impregnates their own cloth.

For you snow skiers check out http://www.dpsskis.com/