The best way to fog the motor is tomakeup a rich fuel

il mix (24:1) in a tank, hook in to the motor,and run the motor for a while so it gets into the vapor separator tank, fuel rail, and through the injectors. Be sure to put a fuel stabilizer into the boat's tank and into the fogging mix to prevent varnish deposits from stale gas.
To protect the motor for storage, change the oil and filter, and the gear oil. Your owners manual or the service manual illustrates how to "pickle" and protect your motor.