Extra lbs like water, some food, extra clothing, jacket, a light of some kind the list can go on. Hiking so lightweight that your extra jacket is a garbage bag does not cut it.
I guess we see different kinds of "ultralight" hikers, then. I have a friend who's a multiple AT through hiker with 25-30 years of experience and is seriously into ultralight backpacking, and I'm moving more and more in that dirction myself. However, that does not mean we are leaving half our gear at home in the name of weight savings.
Extra water is not a map to what hopefully is water.
"Extra" water is dependent on the area, the season and the recent weather. Most of my hiking is in the east, where in many areas and seasons a quart of water is all you really need to stay hydrated between streams. When I hiked in the Grand Canyon, on the other hand, I carried two
gallons of water and was glad I did. Other places somewhere inbetween. This is an issue of experience and knowledge that beginners might have issues with, and in this case certainly better too much than too little.
Extra warmth layer is not silk weight poly pro especially at altitude or shoulder seasons.
Again, area, season, weather. In the SE US where I live, during summer, that silk weight polypro (along with a wind layer) is more than enough. In harsher climes more is needed. I have seen many ultralight packing lists that included fleece vests or jackets in addition to the polypro.
When I see ppl with 15 lb packs for a weeks trip in the mnts I KNOW they are missing gear its just not possible and yes I know whats in their packs.
Sometimes I am sure, but not always. You can shed a
lot of weight without discarding essential gear if you are willing to spend the money on pricey ultralight alternatives. And of course the mountains matter, too. Canadian Rockies are different than the southern Appalachians. IMO ultralight backpacking becomes less and less appropriate the harsher the weather and terrain become.
...twice as much as a normal hiker needs becuase of the nature of your mission. A weekend backpacker does not need a full SAR loadout, does he?
In winter there is more food sleeping bag extra gloves stove and fuel.
Personally, I see true ultralight backpacking primarily as a summer (or in southern areas three-season) activity because you
do need more and heavier gear in winter. That does not mean some ultralight concepts can't be incorporated into winter camping, but the weight savings are going to be much less.
just something like a small headlamp in case you get stuck after dark
Again, a matter what people seem to think ultralight is. I do not think I have ever run across an ultralight backpacking reference (book or on-line) that recomended eliminating a light source all together to save weight. Same with any other really necessary item. Cut the weight by chosing carefully, not by just discarding the item.
If you are running into self-proclaimed "ultralight" backpackers who are wandering into the wild with nothing but a pint of water and a garbage bag, that's not ultra
light backpacking, that's ultra
stupid backpacking.
