New training programme

With only 3 weeks until my Sahara marathon I spent this morning with a useful training session: arranging a double kayak for the Devizes to Westminster canoe marathon that I'm doing with a friend over the Easter weekend. The professional

guy

who has kindly lent us a kayak warned that he "would not even consider such a difficult event, in such an unstable craft, with anything less than 4 months training." We've got two weeks. Oh dear...