This was more a comfort issue than weight. The heavyweight zipper was digging into my legs, the draft collar and hood were just in the way... I was also concerned with the zipper tearing the hammock body.
Overall weight savings was about 6 oz. The new weight is 32oz.
To cut off you hood sew two lines of tread about 5-10mm apart along the line you wish to remove it (use a sharpie to mark it first) then cut between those seams that way you will not cover yourself in down! Plus once you have hemmed the quilt also hem the hood, add a strip of hook/loop or a snap at the neck and you can wear the hood separate in colder weather.
Then do the same to the zip (you may be able to just unpick it) and roll over the hem (grosgrain will add extra weight/cost) you may want to bar tac the bottom of the zip slit to reinforce the foot box. And your done!
Experience is the worst teacher - it presents the exam first and the lesson later. - Unknown