I want to add a 200a alternator to my engine specifically for boost charge when winching. The existing alternator is 120a. Is there a recommended way to set this up? Is it possible to isolate the alternator when its not in use - either electrically or perhaps with a 12v clutch? The setup is for a chev 6.5 conversion and I am sourcing (trying) brackets for the alternator now. The winch battery is a 1300cca 200a/hr carcas size battery, so it can take the charge rate.