I find the Keppel cove climb a bit of a slog really although i have seen it cleaned on a couple of occasions,my preferred way up Hellvelyn is a tad cheeky but creates a bit more interest, although if its wet underfoot its probably best to stay on the Bridleway.
From Glennridding head up to Greenside mine and join the sticks pass climb,once you have completed the zig zag carry the trail crosses an old chimney flue from the mine workings, looking up onto raise the flue ends at the base of an old chimney. From here (looking towards Helvellyn) theres some single track that joins the higher parts of the Keppel cove Bridleway.On a good day it avoids lots of walkers too,rejoin the main climb onto Whiteside, Lower Man and then Hellvelyn, best descent for me is either sticks-seldom seen or Wythburn-returning from Dunmail raise up the carry into Grisedale-Patterdale is also excellent.