On a 35# plane, I don't think I'd use glass at all. I made some out of glass that were way too flexable. All the other sets I've made were carbon/kevlar cloth, carbon tow, carbon/kevlar cloth. I used the kevlar going in the same direction as the gear long ways.
Here's the details:
http://mywebpages.comcast.net/webmas...e/cf-gear.html
and a picture of the finished product:

and another:


I mostly go with the arch shape, because of strength. That top corner, like on conventional gear, takes a lot of stress. They could be done that way, but you'd ned to add extra layers on the corner radius. Take your time, and they'll come out nice!