If taking a canister stove instead of my alcohol stoves, I would take two small canisters or a single 8 oz canister on such a trip, boiling slightly less than a liter per breakfast/dinner (lunches are generally cold snacks/sandwichs). Most of these stoves will boil a liter of water in about 3-5 minutes. I have a Snowpeak Giga. Got rid of my Pocket Rocket a while ago, as I disliked it immensely - I never got as good economy with it as anyone claimed I would, and the stove would not nest inside my pot with the 4 oz canister as the Giga does. I sometimes wonder if I just had a defective stove. It just would not perform and ran me out of fuel in nothing flat.