In reply to Fiend:
We did this about three or four years ago and ended up settling on the YHA in Howarth. Bit more of a diversion south, but a decent place to stay.
It's a bit of a (expensive, suburban) dead spot round the Yorks grit area; all the hostels tend to be up the western edge of the dales. If it was me I might be tempted to stop in one of those spots (very pretty) and just live with a bit more of a commute each day - winter bouldering normally means a 'relaxed' start and plenty of evening to kill anyway.
Mark