Am doing the PW again in 2017; this time north to south.. Doing it in August and rang the YHA last week to book at Byrness (Forest View), Alston, Dufton, Hawes, Malham and Mankinholes. Got in all of them ok. Maybe because it is School holidays? They have nipped their prices up a bit.
Avoiding Tan Hill staying at Butt House in Keld. Got the rest still to book up. Bellingham, Greenhead, Middleton, Cowling or thereabouts and Crowden area...
Apparently there is a new YH opening up near Hadrians Wall late summer 2017.
John