So much of gear selection is technique!
I carry a couple of 1/2 liter cheapo water bottles for on-trail use. They cinch onto my straps with shock cord nicely and they dont weigh so much that I'm much imbalanced when one side is empty.
I don't know why anyone would still carry an actual Nalgene bottle just for water...way too heavy...unless you can justify it as multi-use. One lady I know heats only water in her aluminum trail-cup-pot and uses her Nalbottle inside that as a warming pot, and then as dishware, so that her tea and dinner are both cooked with one measure of fuel.
On a hike I'll do dinner near the last water source. No sense in cooking or crapping near where you sleep, right?
After dinner and before I'm on the way to set up camp I'll heat water and fill up the 96oz Nalgene "Canteen", which is NOT a bottle but a reservoir-type bag. Don't heat it to boiling but to coffee-drinking temps, like 175F or so; because even the risk of scalding is not worth the gain of warmth.
That canteen bag is a hot water bottle that lasts all through the night. It's still warm enough in the AM to provide warm water for morning ablutions. The lid seals tight and it conforms to the shape I want.
If I'm going to be a long way from a water source it's a fine reservoir for that, too. So during the day it can be useful too.
The Nalgene Canteen is 2.25 ounces and bottles with the same capacity add up to more than a pound.
Last edited by steveflinn; 01-11-2013 at 18:15..