MJ,
start reading 'round post #200. This one is the turning point:
http://www.rcuniverse.com/forum/fb.asp?m=9346803
Jeff used the typical 1/2 - 3/4 oz glass cloth and finishing resin technique. Once glassed, it helps to fill the weave of the glass. This can be done in a number of ways. Then, after sanding, you can hit the primer.
Have a DB in the works?
Hope this helps,
David.