Update.

I've made it to Dakhla. Its taken eight days to get here from Marrakech, wild camping each night bar one, when a £2.80 campsite with a shower and good company was much in need. I'm going to take a few rest days here for a while. The weather has been pretty brutal on the ride down. Strong winds carrying sand into every crevasse of my belongings. I got washed out by a rainstorm too... in the Sahara!? As soon as the English guy turns up it rains. I'm drying my tent on the hotel roof.