In one day the party can hike for two quarters, the other two quarters must be spent for making camp and sleeping.
During the night of sleeping, one character should be awake to patrol the camp, but when could she sleep?
In the rules is said that she can sleep any other quarter day but this mean that the group must stop from hiking and wait for the sleep of the fellow who made the night guardian.
This translate into just one quarter per day of hiking, if the group want to have a character awake for the night.
Is it right or I am missing something?