The ferry goes from Far Sawrey, not Wray Castle – that’s a pleasure steamer type thing.
Best (legal) descents from Claife are up Cuckoo Brow Lane from the pub, straight over to the lakeshore track, and Guide Posts either towards Colthouse or Belle Grange.
Apart from that it’s follow your nose or Strava, there are some bits and bobs down the east side of Claife that aren’t on the map.
Personally, I’d head over towards High Cross from Langdale via Hodge Close, then pick off a few of the best descents in sequence – Bacon Slicer to the visitor centre, up the first bit of the North Face trail, then over to Grandad, Dad and Dentist, up from Satterthwaite to Breasty Haw, then Devil’s Gallop, Cunsey and the Cuckoo Brow crossing to finish. That’s about three hours if you get a shift on.