Yeah, I'd go over Bakestall and follow the fence down to above the waterfall, which by the way was no great shakes when I passed by and certainly wouldn't go out of my way for it. It's then around 1.75 mile back to Skiddaw House from there. Skiddaw is a motorway of a track, fairly steep for much of it but straightforward and a great view from the summit on a good day, grim in bad weather.