I just finished making the first prototype for the Light Saber (Saber UL) Total weight with what I think should be a reasonable amount of tailweight was a bit less than 8.5 oz, about 4 oz lighter than the std.

The frame is P90 LEs and spine, 3pt LS. I would really have preferred to use Skinny SULs, but I don't have any, and I would really like to have this flying fairly well for ODSKC.

I still haven't flown it yet, but hopefully soon.