I'm sure there's an obvious way to make a hybrid boat work like a hybrid car, but it's not jumping out at me. Cars can capture energy from braking, but boats have to accelerate in the other direction to stop, and generally aren't in stop-and-go traffic all that much.
Maybe we put sails on the boats and only run the engines when the wind isn't going the right way?
This guy is an idiot. I don't have anything against LGBTQ people, but when it comes to medical stuff, you're biologically male or female, because it matters for the sorts of health risks you might be susceptible to.