In reply to Mark Westerman:
I provided rope support at BS for a successful attempt (in atrocious conditions) last June. Personally, I wouldn't attempt to take a dog up there. It's not a risk worth taking.
As for using BS (with rope support) on an attempt, I'm not at all convinced the degree of added complication is worthwhile. Whilst we had an efficient setup in waiting for our runners, the situation was thrown into disarray by another 'support' party climbing through and entangling the ropes, whilst some other runners climbed up the 1st step and, after struggling in the wet and upon our suggestion, thankfully tied into our ropes albeit in a rather frightening manner. Upon arrival of our runners, the ensuing debacle convinced our leading support runner to quickly divert via Foxes Tarn, whilst the main man and his other support (neither being mountaineer types) opted to climb through, but were left severely traumatised by the affair, only to get disorientated and separated in the mist on the subsequent scramble. Thankfully, he got round in under 22hrs for the clockwise round which wasn't bad considering the afternoon weather (winds of 40-50mph and torrential horizontal rain).
Of course, climber-types might consider BS unassisted on an attempt, but levels of fatigue and prevailing conditions would have to govern route choice on the day. If it were me, I'd opt for no rope-support and take an alternative route if at all uncertain about my tiredness and/or conditions. That said, a dodgy knee will probably prevent me from considering an attempt in teh 1st place (phew!)