In reply to Fredt:
Doesn't work as a base to recce the northern section of the ridge. You'd either have a long walk after the boat, or a long drive round to Slig'.
It does work as an approach point for a ridge traverse itself, so long as you have a plan how to get back. I've done the ridge twice from the Coruisk side, once ending a Slig for a pint and beers followed by a nocturnal wander back to Coruisk, once to sgurr nan Gillean, then descending into Harta corrie before reascending over the shoulder to then head to Coruisk (not recommend in the dark, or fatigued as it requires good route finding and some down climbing.....or at least the way I went did!)
elgol is a nice spot, if you are happy leaving the northern section as a 'on sight', you can do the Dubhs from the first boat with a good chance of making the last boat back, Mrs Fredt could drop you off at the head of Loch Salpin, and you could then walk back to elgol over the Clachglas-Blavern traverse getting you two grand Gabro days out. Shorter day would be the South Ridge/Buttress of Sgurr nan Stri, which is a nice South facing scramble/easy climb.