The sacrificial anode on the boats if located under the jet pump, on the ride plate. But, it's a joke.
Anodes are made from zinc and used to slow the electroylsis process by attracting and grounding the electrical current. Over time, they erode and have to be replaced. Mine has one and for the time I've had the thing, I haven't seen 1mm of loss from electroylsis................you can buy bigger ones and put on it. If you do, they need to be on the ride plate. That's the only metal surface on the boat..........:cheers: