Building a Laser3D
I did sheet the back half of the fuse. Folks here really seemed to encourage it. I did not however sheet the area over the fuel tank, and I also lost the wingtips. My projected weight plus or minus 2 ounces is 4 pounds 8 ounces with a YS 63.
I have a long thread about my build called Laser Models Laser 3D Building Log. That details my whole building process. Can't speak for the other guys.
Enjoy!
Reid