the only problem is i can't spend a day in the mountain because i go only for a week, and with a 4 - 6 ppl group + tutor, so i can't do it that way,
but i can still put it on the carpet?
You unscrew 1 screw (Phillips). Tools are always available. Then you pull out the front and the back and put in differnt pads. The entire process takes 5 minutes.
You always have time for that at the beginning of a day. Someone will take a backpack on the mountain just throw them in there or take a backpack for 1 day.