I am an experienced a Dall Sheep hunter myself and have hunted in both August and September in Alaska. I swapped to a down insulated Hammock Gear Econ Burrow 20 Wide quilt with a sewn footbox from a synthetic insulated Mountain Hardwear Hyperlamina Torch 0 mummy bag. I'm 6 foot, 200 lbs so I am about the maximum(perfect imo) size for those bags to give an idea on fit. I could not recommend enough to swap to a quilt. The weight savings is large, unless you are running something like a ghost whisperer already. I think for most sheep hunting, a 20 degree is plenty as long as you aren't skimping on clothes. I used to subscribe to the idea mentioned above about always running a 0 bag but it just isn't true when paired with dry clothes, even a 30 degree bag, and a 2.5 r value or above mattress. Unless you are hunting past late september 20 is plenty. Plus if you are rained in during the day it isn't blazing hot.
That's why you pair it with an UL bivy and everything is contained
I personally did not have too many issues except when sleeping on exceptionally uneven ground. In fact, I stayed more glued to my neoair xlite because I wasn’t sleeping on nylon mattress to nylon bag shell, but nylon mattress to polyester clothes. I personally tried using the matress straps but didn’t like them and thus prefer to leave them out of my setup. I just clip the neck clip and tuck myself in then wear a buff and beanie to sleep to adress the missing hood. I would strongly recommend the sewn footbox and at least a wide width bag for ground use (or a double wide if you’re particularly big).
