If you have a large boat or trailer, an electric winch might not be a bad idea. Electric winches and jacks are wired to your towing vehicle’s battery and provide you with electric power. If your vessel is exceedingly large, the increased pull from an electric motor could come in handy. These are also handy for people who aren’t able to, or don’t want to, operate a manual crank. On the other hand, manual winches and jacks are less expensive and more reliable.