i do keep my 20ft boat in Cameron House on a pontoon mooring. Very expensive but you will also get a mooring on the river at Balloch for a qaurter of the price. I think Cameron house do have a few spaces just now so worth giving them a call if you need a mooring. It is the best on the Loch along with Fuel pumps on your door - you also get your fuel cheaper than outsiders by 20p per litre I think it is.