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Question - can you use a bivvy bag and poncho instead of a tent? Surely this will save a bit of weight?
Flat Foo.ted wrote (see)
I had a bivvy bag for a number of years and its not really much lighter than a modern tent, but with all the disadvantages of a bivvy. In competitions you are not allowed the bivvy poncho combination either, so its not a starter if you have any inclinations that way.
I use the standard TN laser for the advantage of the second zip - escape in the night for a pee is much easier when you have the second one! The weight penalty for this is about 200g, which I am happy with...
I have been fine with a 300g of down bag in summer and autumn, but the 550g fill bag has been fine in winter in lowland locations.