A local store has a Western Mountaineering Tamarak http://tinyurl.com/6jau2d . It's only 5' in length but otherwise a nice bag that opens up easily to convert to a lightweight 30° quilt. This is just an idea so go easy on this quilt-newbie if it's ....well an unworthy idea. I was thinking that I could get this Tamarak and then sew on 1-yard of insulation (Climashield maybe) and ripstop nylon at the top to make it fit me and I'd have a quilt. This would negate me having to sew a whole quit, instead I'd only have a yard's worth of material to put together and sew to the top of the Tamarak. Whole thing would cost me about $230. Good idea or ney?