Start at the top and work your way down. Docking fees would cost you more than what you could salvage it for unless you own the dock. Things to consider are do you have access to a crane, trucking, constant supply of consumables, salvage permits for waterways (eventually you will have to cut into the fuel tanks), the list could go on and on. Bears post of ebay it would more than likely be your best option, sell it and let someone else deal with it.